Sue, Jenna and Brooklyn are the first, second and third wives of Gavin, a charming doctor who’s made a fortune selling all-natural vitamins – and broken all of their hearts along the way. Now, they all share the same fantasy: they want Gavin to understand – to feel for himself – the pain he’s caused them all. Meanwhile, Roarke brings Ruby’s youngest daughter, MJ, to the Island to help Ruby remember who she is. And hopefully keep her from disappearing into the ocean forever with Isla… as a mermaid.