From box-office sensation Stephen Chow comes an outrageous new comedy which follows a young, rich tycoon who has acquired property on the coast of a beautiful island to develop high-end hotels. To make the luxury development tourist friendly he plans to use a destructive sonar device to drive away marine wildlife, but his scheme back fires when a bevy of mermaids learn of his plans.  In order to prevent their own demise,they send a beautiful young mermaid undercover as a human to woo the mogul and steer him hilariously off-course.