Police Officer Yeon-su is dispatched to an island with her daughter after her divorce. On the night of her welcoming party, Yeon-su witnesses the strange relationship between orphan girl Yae-eun and the island workers. Yeon-su suspects her of prostitution. When Yeon-su starts to investigate the case, the village foreman tries to send Yae-eun out of the island to settle the issue rapidly.
