You were sitting in the shade reading a book titled "RWBY" when you received a call with a contact image of a young girl with orange eyes and hair tied up in a ponytail with the name "Kohaku" under it.

"Hello."

Kohaku: "Y/N, we're picking up movement on the tracking device. Linking it to your radar."

You looked up and saw a symbol showing the location of the device in your vision.

"Got it, thanks."

Kohaku: "Good, get a move on it. Wait, are you reading RWBY? And you didn't invite me? That's mean. I thought we were siblings."

"I'll give it to you when I get back. Let me know if there are any changes."

Kohaku: "Roger."

You exited from the shade, revealing yourself having white hair, red eyes and a metallic body, with your left arm having a crystal-like alloy.

You looked at the massive city of Harmony and looked around until you saw the signal. You extended the jet function built into his back and followed the signal to an armored truck moving through traffic. It exited the highway and you continued following it, all the way underground and into a forgotten zone of the city.

Kohaku: "Uh, Y/N, you've gone pretty deep. Where are they going?"

You looked around and saw a symbol with a staff in the center of a gear-like shape.

"If I had to guess, they're looking for something in Atlas."

Kohaku: "Atlas was destroyed and abandoned 300 years ago. What would they want there?"

"I'm going to find out."

You saw the van go to a field and multiple armed soldiers emerged from it.

"What the hell would Rayonne be doing in the ruins?" you thought.

Kohaku: "Y/N, I told Mom about this, she's rounding up some of the Hunters she can trust. Wait for us."

"No promises."

The soldiers opened up a secret entrance went go through it. You entered as well, and saw several Atlas robots.

You then saw the soldiers breaking through an armored door, entering a room with a girl attached to several cables.

"We found it," one soldier said. "Black Shuck will be pleased."

"Search the other rooms," another officer stated. "There may still be more."

They left the area and you walked up to the girl, scanning her.

"She's an android."

You detected a lack of energy and wondered if you can activate her. Before you did, you remembered what Kohaku said beforehand:

Kohaku: "I know some people would say it's better to leave well enough alone, but how will we know unless we try to do something."

You extended your left hand, grabbed the girl's arm, and sent energy through her circuits and into her core.

"I hear something!" a Rayonne soldier shouted from afar. "It's coming from the other room!"

You let go of the girl and pulled out your swords: One with a longsword-like design and one with collapsible blades.

The soldiers entered the room and started firing at you, but you dodged the bullets and deflected a few. You then cut their weapons and knocked them out.

You then heard several vehicles arriving and got a bad feeling.

"Hunter!" a Rayonne Officer shouted. "Lay down your weapons and exit the building."

You turned around and saw the girl activating.

"We appear to have a situation," she said, opening her eyes.

The cables detached from her and she flew through the ceiling. You followed her and saw her easily dispatching the Rayonne reinforcements. She uses the swords she was concealing in her backpack and fired several energy beams at the vehicles. After finishing them all off, she landed on the ground and turned around and saw you.

"Salutations sir!" she shouted, excited. "My name is Penny Polendina. What's your name?"

"Y/N L/N."

Penny: "Well then, Y/N L/N, welcome to the Kingdom of Atlas!"

She then noticed that the area has been encased in the structure of Harmony that she is not aware of.

Penny: "Wait... that wasn't there before... where am I?"

"It's a very long story."