Ahn is a suicidal saxophonist, Mun is a violent simpleton with an I.Q. of 80, and Maria is a single mother with dreams of becoming a nun. Ahn has tried numerous times to kill himself but nothing has ever worked. When he witnesses his wife's infidelity, it is the last straw. He gets a call from Mun, and both decide to take things into their own hands by robbing a café at gunpoint. They run into Maria, who is determined to find her baby who has been taken from her. Maria decides to use the two men to get her baby back and joins the team.