Monster High..

It's officially Spring Break at Monster High, and Lagoona takes her gilfriends across the sea to the Great Barrier Reef, but they are ship wrecked and end up on a mysterious skull shaped island. At Skull Shores, they enjoy the local hospitality until they realize that they are being used by a slippery showman named Farnum to lure the rarest, most mysterious monster of them all, "the Beast.”