Teenage protagonist (and trained assassin) Zi's whole life has been part of an elite group named Group Z, but her newest mission changes everything. Sent to kill a family of five, including young child Benny, and fellow teenagers Damon and Sapphire, Zi begins to learn that there is more to life than death and killing. Feelings soon begin to grow in Zi for the artistic and loving Sapphire. But when The Master discovers Zi's growing attachments, the family are forced to flee, thrown into a battle for survival and a world where everyone can be free.