In this episode, the adventurous twosome take on the undersea case of three pirates who swear that the sharks are actually singing!

Travel with the pint-sized supersleuths, Mary-Kate and Ashley Olsen ("Full House"), and their sidekick dog, Clue, to the Edge of the World, where a fleet of UFOs have been flying over Earth every 93 minutes.

Mary-Kate and Ashley go with their friends to Hawaii for a party.