Maggie Malone wants to fit in at her new school, so she decides to join the swim team. Only her tryout is a complete flop (of the belly variety, to be exact). What Maggie needs is a little help – from her mostly magical boots!
What could be better than spending a day as Marina Tide, daughter of a famous oceanographer? So Maggie jumps into Marina’s shoes—er, flippers—for a day of sunbathing, ocean breezes and an adorable pet dolphin! But there’s a treasure-hunting traitor aboard her ship… and it’s up to Maggie to save the crew and the coral reef before her time runs out.