Join your ghoulfriends in a all-new aquatic experience! They are hauled to the submerged world of this Great Scarrier Reef when the ghouls become hauled in to the faculty pool. Lagoon realizes she's come home also, in a mission of their heart, decides to come to terms with her very own freaky flaws. She'll need help from the friends that are most creeperific ever as she culminating at a dance extravaganze, faces a frenemy in the ago, and struggles a dreadful monster from the deep!