Six girls participate in the boot camp for assassins. The instructor of the boot camp is the legendary hitman, Kunioka. At first, they repel each other, but the girls gradually develop friendships while enduring the hard training. By chance, the girls get involved in a life-threatening battle with a group of anarchist hitmen.

Despite growing up in a single-parent household, Maria was never that close with her mother. As an adult herself, she is thrust into being responsible after her mother suddenly dies. As she sorts through her mother’s belongings, she finds CDs, photographs, a diary, and an unplayable demo tape named “MARIA” that her mother had collected when she was around Maria’s age. Curious about her mother’s pa...