古峰（吴孟达 饰）和段海（刘江 饰）皆是苍穹派弟子，因为盗取了极乐神功的秘籍，古峰保住了段海，自己却被逐出师门。为了报答古峰，段海收养了他的儿子古玉楼（吴镇宇 饰），对其悉心教导，段海待古玉楼之好，甚至超过了待他的亲生儿子段飞（周星驰 饰）。
On Fran and Maxwell's honeymoon aboard the yacht, Fran falls overboard and Maxwell jumps in to rescue her. They manage to make it to a deserted island. There, they have some good times and bad times in their survival, but the worst ends up being a poisonous bite that Maxwell receives. He thinks he's going to die, but luckily for him, Fran watched daytime television in the past which gave her the necessary skills to tend to his illness. Meanwhile, they are noticed missing when the yacht docked at its first port without them. The Sheffield kids, Sylvia and Niles fear the worst. After a week of the Coast Guard not being able to locate any sign of Fran and Maxwell dead or alive, C.C. decides to take matters into her own hands.
