Splash into a Whole New Monster High™ World! Join your favorite ghoulfriends in an all-new aquatic adventure! When the ghouls get pulled into the school pool, they're transported to the gore-geous underwater world of the Great Scarrier Reef. Lagoona realizes she’s come home and, in a fintastic mission of the heart, decides to come to terms with her own freaky flaws. Of course she'll need some help from the most creeperiffic friends ever as she confronts a frenemy from her past, competes in a scaretastic dance extravaganza, and fights a terrible beast from the deep!