Wai Kit, Heung Hoi and Ah Man always go out together. Heung Hoi buys a music box to Ah Man. She likes it very much. Wai Kit obtains 2 tickets of a dancing party. He invites Ah Man to go and she accepts with joy. One day, Ah Man discovers the music box is lost. She searches everywhere but fails. Wai Kit purchases one but finds out Heung Hoi has already found the music box for her. Wai Kit becomes jealous and thinks Ah Man like Heung Hoi.

Wai Kit decides to give away the tickets to Amah Hung. Ah Man is disappointed.