 After falling in the water and almost drowning, a young schoolteacher finds himself lying on a beach, unable to remember what happened. Unbeknownst to him, his rescuer is a mermaid, who has fallen in love with him. To pursue her love, the mermaid comes onto land and enrolls in his school as a student. Things don t work out as she planned, however, as she soon attracts the jealousy of the other girls in the school. To make matters worse, she must hide her secret from a gang of fortune hunters who would like nothing better than to catch their very own mermaid.