The title speaks for itself. Hsiao plays Ouyang Penzai, which translates into “potted plant,” the understudy of a retired contract killer, who has taken over his master’s work for the mafia. In a reference to the film “Léon,” the well-trained underling has a hobby of cultivating potted plants, but experiences some difficulties in taking a life.

After he befriends his first victim, Penzai finds himself unable to complete his mission. However, knowing that the gang would not only find someone else to kill not only the target, but also him, Penzai stages a death with a dead body and gives the man a new identity.