Tista leads a dual life as an assassin and a university student. What price will she pay to save the people she loves?

Tista, a.k.a. Sister Militia, the Grim Reaper of New York City, leads a dual life as a university student studying to be a teacher. With extraordinary eyesight allowing her to make shots at exceedingly long range, she has come to be feared by the criminal underground. Tista knows she is doomed, but can her feelings for a young man she just met bring her back from the abyss? And what will she do if he finds out who she really is?

Tista's activities as the assassin Sister Militia have drawn the attention of the FBI. Agent Snow makes contact with Arty and begins to investigate. Meanwhile, the Grim Reaper of New York City-Tista-continues to bury her emotions in order to carry out her deadly missions. But when the organization she serves issues a particularly cruel order, can she carry it out?