Bud Yan and Audrey go to the Siu Mui Sa Beach to enjoy the sunshine bath. Audrey is disturbed by some manes after she picked a diamond sunglass on the beach. Bud Yan throw away the sunglass and go back to Hong Kong with Audrey. However, they find the sunglass still in the luggage. Audrey fights with Bud Yan for his careless of not to throw the sunglass. At night while Audrey is sleeping, she puts on the sunglass and swimming suit, and she swims in the living room. When she wakes up, she tells Mrs. Bud that she witness a girl was being murdered on the beach. Mrs. Bud confirms that the mane is not attached on the sunglass but with it. The mane wants to tell Audrey about her fate. Mrs. Bud urges Audrey to return the sunglass to where she picks up on the Siu Mui Sa Beach.
Bud Kay, Pit, Pat and Kou take the chance to go with Audrey to Siu Mui Sa for fun. When four of them get into a disco there are only two girls left who are late for work. All other PR are reserved by a rich. Pat and Kou go out with the girls and they meet a tough ghost. They run back to the hotel. Audrey and Bud Yan bring the sunglass back to the beach. He tells Audrey to put the sunglass into the sea. However Bud Yan does not aware Audrey is walking towards the deep water as he is attracted by the beach girl. Audrey is drown. Bud Yan rescues her. Audrey tells everybody that she sees the whole picture of the murder while she is conscious and she remembers the killer's name is Ka Hing. Later when they are having dinner outside, Audrey recognizes that the man next to their table is the killer. He is also the rich that reserved all PR in the disco. The story is, a loose character Ka Hing married a rich wife, but his wife finds his disloyalty and wants to divorce. Ka Hing worries that he will have nothing if he divorce, then he kills her and buries her body on the beach. To ease the anger of the mane, Audrey let the mane onto her body to force Ka Hing to tell the whole story...