Remus could not have been more nervous and anxious, and it had everything to do with James Potter and Sirius Black and their stupidest idea yet.

     Not long ago, the two boys had informed Remus that they had found a way to help him during the full moons. It wasn't a cure for werewolves, but it was a way they could spend the full moons with him.

     It was a known fact to Remus that werewolves merely attacked and hurt humans, and not animals, which led James and Sirius to come up with the idea of becoming Animagi.

      Unlike Remus, those two apparently couldn't see the dangers that lay ahead. Or rather, they just couldn't care less. If anything, they thought that the dangers and risks were what made all this more fun and adventurous. No matter how many times Remus tried to talk them out of it, no matter how many times he told them that it was illegal or that it was an extremely difficult process or the fact that he could easily hurt them, they wouldn't back out.

     Their only problem was that they didn't know how to become Animagi.

      James had taken his father's invisibility cloak and they had taken a detour to the library hours after curfew and sneaked into the restricted section, in search for a book that could explain the process of becoming an Animagi, but they found nothing. There were many books that talked about an Animus, but none of them told them how to become one.

     Although, in one of those books it was mentioned that all they needed to know about becoming an Animagi was in The Quest to The Impossible Magic book.

     James could remember from his many visits to Professor McGonagall's office that she possessed that book and kept it among her other books in her office, many of which were chained to her bookshelves. Some of her books even contained a spell that blocked the summoning charm.

     In this case, they couldn't even use James's invisibility cloak, which meant that the only way they could get their hands on their needed book was if Professor McGonagall gave it to them herself.

     Given their terrible reputation, they knew there was no trick they could pull on that strict professor to convince her to give them the book.

     But there was another way.

They could convince someone else to ask Professor McGonagall for the book. Someone who had a logical reason and a great excuse for wanting to read more about human transformation.

"What do you two want?" Jenna had asked them when Sirius and James approached her the other day.

"We wanted to ask you to do us a favor," said Sirius.

Jenna gave him a look. "And what makes you think I would agree to do it?"

"We figured you'd say that." Sirius's grin widened, before turning to face his friend, "James, if you will."

"Of course, of course." James cleared his throat. "Well, little sister, as it so happens, you don't have a choice but to help us."

Jenna glared at him, folding her arms angrily. "And why the hell is that?"

"You might have forgotten, but I never do. Let me refresh your memory," said James with a sly grin. "Last year. Summer break. One day when Mum and Dad were at the Ministry, you asked me to help you find our parents' Gringotts' key and then asked me to go to the bank with you and take five hundred Galleons from their vault. You asked me not to tell Mum and Dad about it, and you also wanted me to help you, no-questions-asked, without even telling me why you needed that money. Now do you remember it, or should I explain it with more detail?"

"Ooh, definitely more detail," said Sirius, smirking with anticipation.

"See now, J.P? You owe me a favor, no-questions-asked," said James. "Unless you want me to tell Mum and Dad about our detour to their Gringotts' Vault, of course."

Jenna had to hold her hair from turning red in fury as she glared daggers at him, until she finally grumbled, "Fine. What do you want?"

"We want the book of 'the Quest to the Impossible Magic'," said Sirius, getting straight to the point.

     "Why can't you get it yourself?"

     "No-questions-asked!" James reminded her. "We want you to talk to Professor Dumbledore and explain to him how you want to work more on your Metamorphmagus abilities, and convince him to give you a permission form to borrow the Quest To the Impossible Magic book —"

     "A book that only McGonagall possesses," Sirius added. "She keeps it in her office, and she has made sure that no one else can reach it, with or without magic."

     "Exactly." James nodded along, grinning. "Get that book from her, without letting anyone find out that you're doing it for us. And then we'll be even."

***

From asking Dumbledore for the permission slip in the Great Hall after dinner and all the way to Professor McGonagall's office that night, Jenna kept cursing her brother under her breath.

She had no idea what kind of magic his brother and his friends looking for and why on earth they wanted that book, but she had no other choice, unless she wanted James to tell their parents about her secret.

It had been the summer before their second year at Hogwarts when it had happened. Jenna desperately wanted to get on the Gryffindor Quidditch team, and she felt as though her old broom was the reason she was being held back at getting better. She thought that maybe if she borrowed her father's broom and practiced with that during summer, she would become so good at flying that she would get on the team.

The problem was that Mr. Potter didn't allow his children to fly with his broom, seeing as it was an expensive model and was built of an extremely rare wood.

So, during that summer, Jenna would sneak out of her room every night after the rest of her family fell asleep, and she would take her father's broom from the attic to practice flying with it in their backyard.

It was on the sixth night of using it that the disaster took place.

Jenna had been flying with it that she nearly crashed into their family owl who was bringing their mail, causing her to lose control of the broom and falling down into a bush. Thankfully, she didn't get hurt, but the broom ended up broken beyond repair.

Jenna hid the remains of the broom in her closet and the next day when her parents went to the Ministry for work, she asked James to help her find their parents' Gringotts' key and used the Floo Network to get to the Wizarding bank to take five hundred Galleons from their parents' vault. She didn't tell James why she wanted that money, but at last she managed to replace her father's broom with great difficulty, and luckily, he didn't find out about it.

Yet.

Jenna knew her brother well enough to know that he wouldn't hesitate to tell their patents about their little detour to Gringotts if Jenna didn't stick to the end of their deal and didn't get that book from McGonagall.

Jenna didn't want her parents to find out, because if there was one thing she hated, it was being preached at or scolded. By doing this for James, they were going to become even.

Although, while Jenna was explaining why she needed that book to Dumbledore that night, she got a sense that he somehow knew she was lying and that she didn't want it for herself. But the old wizard smiled either way, gave a wave of his wand, and a parchment and a magic quill appeared from thin air. And so he wrote the permission letter and gave it to her.

The walk to Professor McGonagall's office took a long time, because she couldn't take the direct corridor to her floor, seeing as Peeves was lurking there, looking for his next victim to frighten. But at last, Jenna reached her office's door, already out of breath, and knocked.

"Yes?" a firm voice came from inside, so Jenna took this as her cue to open the door.

She peered her head inside. "Good evening, Professor. Can I come in?"

Professor McGonagall didn't raise her head from where she was sitting behind her desk. She merely moved her eyes and looked up at the young student over her thin glasses.

Professor McGonagall sighed, glancing back down at the parchments that laid neatly before her on the desk. "I'm busy grading the fifth years' essays, Potter. What do you want?"

Clearing her throat awkwardly, Jenna walked inside and closed the office's door behind her, before walking toward Professor McGonagall's desk.

"I'm not going to take much of your time, Professor. I just wanted to say that I spoke to Professor Dumbledore tonight about a book I was interested in reading, and he gave me this," said Jenna, placing the permission slip in front of her.

Professor McGongall exhaled once again and put down her quill, before picking up the letter to observe it more closely. Every few seconds, the professor would glance over at Jenna before turning her eyes back on the letter. Jenna was growing uneasy under her careful and sharp gaze, so she just pursed her lips together and tried to look around the office, as though seeing it for the first time.

"The Headmaster has written here that you want The Quest To The Impossible Magic because you want more information on Metamorphmagi and to work more your abilities," said Professor McGonagall, her eyes still on the letter. Then, she looked up and her sharp gaze met Jenna's eyes with more intensity. "Correct?"

She nodded slowly. "Yes."

"I understand your curiosity, Potter. But there are many books — in the students' library, in fact — that can help you in this subject. Why do you need this particular book?"

"I... well..." Jenna felt at loss for words as she tried to quickly come up with an answer. "I've read all the books in the library about Metamorphmagi, but all of them only explained what they are, what their powers contain, and the known Metamorphmagi in history. But I want to know how I can work more on my powers."

Jenna had made a big risk with this excuse, because she had not read the books in Hogwarts library about Metamorphmagi, and she had no idea what those books contained, and all she could do was hope that Professor McGonagall wouldn't see through her lie.

At last, Jenna let out a small breath in relief when Professor McGonagall said, "Very well." And so, she stood up from behind her desk, took off her thin glasses, and walked toward the small library at the other end of her office.

Jenna watched with great curiosity as Professor McGonagall took her wand out of her long, emerald-green robe and pointed it at one of the books on the top shelf, which was for some reason chained there.

Once she flicked her wand, with a small thud the chain unbolted and the book came down flying into Professor McGonagall's hands. But there was still a lock on the book that bound it, which made them unable to open it.

"This book belonged to the private library of Rowena Ravenclaw," said Professor McGonagall, walking toward Jenna as she observed the book. "After her death, it is said that many of her books were stolen and sold, but this one was one of the few that remained safe at Hogwarts."

Professor McGonagall handed the book to Jenna, who looked down at it with both interest and confusion. "But how do I open it?"

"Look more closely at its cover."

Jenna did as she was told. The book was covered with dust, although Jenna was sure that there was nothing written on it. But either way, she inhaled a deep breath and then blew on the book.

The moment the dust flew off the book, letters magically appeared on the black cover of the book; random letters that were written in red, scattered all over the cover.

"That is anagram," said Professor McGonagall when she saw the confused look on Jenna's face. "Those letters will make a sentence. If you figure out what it is and unscramble it, the book's lock will open."

Jenna chuckled nervously. "Rowena Ravenclaw really liked riddles, huh?"

Professor McGonagall gave her a small smile. "She valued wisdom above all."

Jenna looked down at the letters on the book, read them over and over in her head to make sense out of them, until she finally blurted out, "Happiness dwells in the soul!"

The moment Jenna said those words out loud, the scattered words began moving until they fell beside each other in that exact order to form the sentence, and right at that moment, the lock opened.

"Each time you close that book, it gets covered with dust, and each time you blew on it, new letters appear on the cover," Professor McGonagall explained. But then her voice became even more stern as she said,

"I can only let you have this book in your possession for one month. And I want you to take great care of this book, Potter. Make sure it doesn't fall into someone else's hands. It contains dangerous spells and potions. There's a reason it's called the impossible magic. People have lost their lives trying these spells or making these potions. One small mistake in their incantation or a tiny flaw in its brewing can cost a life."