Barely out of their teens and trained as assassins, Rigel members are taught that the Kalideyes are evil and must be destroyed.

Makise—now named Maru—and her team fight against all odds during their training within the Rigel organization to rid her country of the dreaded and mysterious "people" called Kalideyes. Facing horrors, nightmares, depression, and injuries, how many will survive?

As Maru prepares for her first mission, she realizes that relying on herself in times of crisis isn't enough, but her teammates are as broken as she is. When she is forced to fight for her life, who will be there to save her?

It won't be long before Maru learns the truth behind the enemy and an even bigger truth that leads her to safety.