The world had changed. Over twenty years ago, monsters emerged from the ground and put the earth in chaos. People split themselves apart from one another in desperate attempts to survive.

Whiles others were trying to survive on the surface, fighting off the monsters from deep below, she was trying to survive a different kind of monster.

She was given only a number. There were no names. No pleasantries. Just tests.

Everyday 636 had to undergo painful and inhuman testing. Her whole life she had been in a cage. The scientists around her tried to rip her apart. Turning her into something beyond human, with the end goal of a weapon to use against the monsters that had surfaced years ago.

636 was content for things to remain and stay in the labs forever. Treated like an object. Too afraid to fight for her place.

That was... until she met a boy from cell 13 and learned what it meant to have a choice.

It took unforeseen circumstances for 636 to realize no one belonged in a cage and she could only go so far before she reached her breaking point.