Megan is kidnapped by an Italian sea ghost prince, who believes she's a threat to his dreams of diving glory, and Chloe thinks she has discovered who the Sea Born really is. Chloe comes up with a great way to make some money for the cash strapped cafe. If the best swimmer enters the island's dive competition, they will win big prize money and save the cafe. And Chloe will be one step closer to discovering the identity of the Sea Born, who is sure to be a whizz in the water. But Chloe is surprised to find that the best at breath holding is actually Megan. Is she really the Sea Born that Ragnar seeks? When Megan is kidnapped by Alonso, an Italian sea ghost prince determined to secure the dive champion's trophy for himself, Chloe and Abi have to track down their friend. But with Megan injured in the escape, the gang have to think quickly and find someone to enter in her place. Do they have a chance of beating the super-competitive Alonso without Megan's amazing diving skills? And will Chloe betray the kids and reveal her suspicions about the Sea Born's identity to Ragnar?