In San Fransokyo, people were bot fighting. Not one was more excited than Mr. Yama. He was participating with his bot, Little Yama. He had not lost a single fight.

"THE WINNER, BY TOTAL ANNIHILATION... YAMA!" The announcer called out.

Mr. Yama smirked. "Who's next? Who has the guts to step into the ring with Little Yama?"

Just then, a boy spoke up. "Can I try? I have a robot. I built it myself."

Everyone laughed at the boy's robot.

"Beat it, kid. House rules: You gotta pay to play." The announcer said.

The boy held up some money. "Oh. Uh... is this enough?"

"What's your name, little boy?" Yama asked.

The boy introduced himself as Hiro Ryan Hamada.

"Prepare your bot... Zero" Mr. Yama said.

The first time, Hiro lost. The second time, Megabot managed to take apart Little Yama.

Megabot did a dramatic bow. "No more little Yama." Hiro said tauntingly.

"What?!" Mr. Yama cried. "This is not possible!"

"I'm surprised as you are!" Hiro replied. "Beginner's luck."

Mr. Yama marched over to Hiro and the spectators backed away in fear. "You wanna go again?" Hiro asked.

"NO ONE ANNIHILATES YAMA!" Mr. Yama yelled. He then turned to his goons. "Teach him a lesson."

They nearly beat Hiro up until a motorcycle came in and forced the goons to get back. Riding on it was Hiro's older brother, Tadashi. "Hiro, get on!" He called.

"Tadashi!" Hiro exclaimed with a smile as he got on. "Good timing!"

Tadashi shoved a helmet onto Hiro's head before taking off.

Yama tried to control Megabot, but it attacked Yama before returning to Hiro.

"You ok?" Tadashi asked.

"Yeah!" Hiro replied.

"Are you hurt?"

"No." Hiro replied.

"Then what were you thinking, knucklehead?!" Tadashi yelled, hitting Hiro several times. "You and your sister graduated high school when you were thirteen, and this is what you're doing?!"

The goons and Yama were gaining up on them from the front. "Hold on!" Tadashi yelled, swerving the motorcycle and driving it over a ramp.

"Bot fighting is illegal!" Tadashi continued to lecture Hiro. "You're gonna get yourself arrested! And speaking of your sister, where's Autumn?"

"Last time I checked with her, she and her three friends were gonna go for a stroll on Hartzel Avenue." Hiro replied.

Tadashi groaned. "And by 'taking a stroll', you mean tagging buildings, right?"

"Yup." Hiro replied.

Tadashi groaned again. "I've told her to stop associating with those creepy friends of hers! They're criminals for goodness sake!"

They got to Hartzel Avenue, where they found four girls spray painting buildings with the word "NASTY".

One of the girls had back length orange hair and emerald green eyes. She was wearing a sky blue caviar embroidered organza dress that a flower girl would normally wear, but it was her size. This was Hiro's twin sister, Autumn Lee Hamada.

"Autumn, get on!" Tadashi called.

Autumn got on. It was her turn for the lecture. Tadashi slapped Autumn over the head twice. "What were you thinking, Autumn?! Tagging buildings, of all things?!"

"Bot fighting isn't illegal. Betting on bot fighting; that's illegal, but it's so lucrative! AND THERE'S NO ONE STOPPING ME!" Hiro shouted triumphantly.

Just then, cop cars pulled up, blocking their way. "Oh, no." Tadashi said.

As the cops handcuffed the three, along with the botfighters and the three girls Autumn was tagging buildings with, Autumn said, "You were saying, Genius?"

Autumn and Hiro were placed in a holding cell, along with Autumn's three friends, who were named Charlotte, Genevieve, and Nikki. On the other side, in another cell, stood the botfighters and an angry Tadashi. Hiro, Autumn, Nikki, Charlotte and Genevieve were the only five minors.

"I guess it was our mistake, Autumn." Genevieve said.

"Lesson learned?" Autumn asked.

"Yeah." Nikki replied.

"I like the word you guys spray painted. Nasty, that suits Yama." Hiro said.

Autumn, Genevieve and Nikki laughed. Charlotte just let out a sigh.

Eventually, Cass arrived to settle things with the charges.

Hiro, Tadashi and Autumn were let out. "Hi, Aunt Cass." Tadashi said.

Cass ran over to her nephews and niece. "Are you guys ok?" She asked, hugging them. "Tell me you're ok!"

"Yeah!" Hiro and Autumn said at the same time.

"We're fine." Tadashi added.

Cass then pulled on Hiro and Tadashi's ears. "What were you knuckleheads THINKING?! And you, Autumn Lee Hamada, YOU ARE IN SO MUCH TROUBLE, YOUNG LADY!"

On the way home, Cass yelled at Autumn and her brothers. "For ten years I had done the best I could to raise you three! Have I been perfect? No! Do I know anything about children? No! Should I have picked up a book on parenting? Probably! Where was I going with this?"

"Sorry." Tadashi apologized.

"We love you, Aunt Cass." Hiro and Autumn said in unison.

"Well I love you too!" Cass replied. "Had to close up early because of you three! On Beat Poetry Night!" She ate a donut. "Stress eating!" She explained. She called for Mochi, the Hamada family cat.

Later, Hiro was looking up a bot fight, Autumn was on the other side of a divider changing, and Tadashi was lecturing them. "You two better make this up to Aunt Cass before she eats everything in the café."

"For sure." Hiro replied.

"I have learned my lesson, Tadashi. Never again will I tag buildings." Autumn said.

"And as for you, bonehead," Tadashi said to Hiro. "I hope YOU learned your lesson too."

"Absolutely." Hiro replied.

"You're going bot fighting, aren't you?" Tadashi asked when he saw Hiro's computer.

"Good grief, Hiro, when will you learn?" Autumn questioned.

"AUTUMN!" Hiro yelled.

"Take a chill pill." Autumn said. "Seriously?"

"There's a fight across town!" Hiro said. "I can still make it!" He proceeded to grab Megabot. Before he could go, Tadashi grabbed him by his hoodie. "When are you gonna start doing something with that big brain of yours?"

"Now, I'd say." Autumn said, pulling back the divider. She was wearing another caviar embroidered organza dress, only this one was pink.

"What?" Hiro asked. "Go to college like you? So people can tell me stuff I already know?"

"Unbelievable." Tadashi said. "What would Mom and Dad say?"

"I don't know." Hiro replied. "They're gone. They died when Autumn and I were three, remember?"

Tadashi then agreed to take Hiro to the botfight, but instead, he was going to bring Hiro and Autumn to San Fransokyo Institute of Technology.