On a morning like any other, the world receives a message. “Greetings creatures of Earth. Your planet has been selected for System integration.” Moon Ye-rin, called Erin by most, picks up on the game-like elements, and at 19 she isn’t too old to adapt to the new paradigm. 24 hours to integrate. 7 days to assess. Then…level like your life depends on it, because it does. Everything is a skill or ability, including the anger Erin has carried since she was six. Will that anger coupled with her martial arts skills be enough to protect her middle-aged mother?