People think Luo Marin is strange. Indeed, what else can you call a young lady, lost in the confusing world of personal signs and small secret rituals that accompany her every step? A girl who avoids contact with her peers and prefers to stay at home, among a mass of useless objects? And the situations she finds herself in are also strange... Recently, Lo, walking down the street in an abandoned area of Cleveland, almost fell under a stray bullet. And the next day I learned from the Internet that a young woman had been murdered there. By chance, the thing of the murdered woman fell into Lo’s hands - a figurine of a beautiful butterfly. And the girl had an obsession to find out why the stranger died. She feels like the butterfly is forcing Law to reveal her secrets...