The Only Girl In Camp.

Camp Diablo isn't some camp where you fish or hike or do anything fun, this camp is a training site for men ranging from four to twenty. And it's only for men.

They're trained to fight for their empire until their last breath, and that could be at any time.
Each son in every family is assigned by the Government from birth to be handed over to the empire.
Mothers and fathers have no choice but to obey the command that is given out by the cruel ruler, Apollyon Samial, who is rumored to have his own personal army of relentless murderers who would stop at nothing to terminate the people who resisted.
Camp Diablo is something that no one could be prepared for and Alice meddle is stuck in the middle when she is taken instead of her five year old brother, because she has the supposed 'gene' needed to be recruited into the force.

The 'gene' is why so many people have been taken, and at such a young age too.
Around the age of four is when the 'gift's' start to make an appearance, and there are so many of those 'gift's' that Apollyon wants and needs to remain in power. So at the very young age of four is the time where Apollyon can mold their minds and gift's to his uses with brute force.
Too bad Alice got the wrong gene.