Lockie's laying low. Curtis was arrested on the weekend and because Lockie's dad is a cop, Curtis thinks Lockie snitched, even though he didn't. While surfing at his secret hiding place, Lockie misjudges a wave and ends up copping a surfboard in the head. A mysterious girl comes to his rescue, scooping him to safety. As he comes to, a groggy Lockie thinks he sees a flash of a tail as she disappears back into the water. Lockie should've known better relaying the story to Phillip - especially when the mystery girl appears at school as the new girl, Mel. Phillip is on a mission to prove Mel is in fact a mermaid. Egg, meanwhile, is challenged by Curtis to prove whose side he's really on. Egg has gone this far with Curtis, is it too late to go back now?