After watching her fellow orphans be taken almost every night to be used as lab rats, Samatha has had enough. Her decision to do something causes her to release someone named Kallie, and it may result in the orphans salvation, or be the biggest mistake of her life.

The few remaining orphans in Saint Delfine Orphanage have discovered that they are a part of an experiment. Some are turned into monsters while others are "tested" on. Even with this knowledge, the few remaining orphans find themselves struggling to survive, not having any way to fight back. Desperate, one orphan named Samatha takes a gamble and manages to make it into the Vault, the place where the orphanage holds their most dangerous monsters that have the possibility to destroy the world. There she manages to unlock the most heavily locked door. Instead of a horrific monster or some kind of vial for a virus, there is a pink-haired girl whose name is Kallie.

Unfortunately, or fortunately, Kallie is a type of monster. She has a dark past and a massive grudge against the mastermind behind the orphanage, Aunt Ravean, and she will stop at nothing to get her revenge, even if it means killing every guard, every monster, every scientist, and every person in her way. Indeed, Kallie is quite the monster.

Armed with unreal strength, a sharp mind, her own insanity, her ability to make anything a weapon, and the other orphans, Kallie will help the orphans escape and get her revenge on Aunt Ravean. Making traps, tipping the odds, and using teamwork. Who said a little kid isn't a threat?

[Cover art is not mine]
(Used to be for the Non-Mainstream Weapon challenge)