Christmas is just around the corner and Brie - the little starfish who stands proudly on Bubbletown's Christmas tree every year - is missing! Where could she be? Enter mystery-solving police inspector McToothy the shark and his tag-along helper Happy Henry the tiny crab who are determined to solve the riddle of the missing Christmas starfish! Meanwhile, Muggles the fun-loving trigger fish and his best pal Joy, the dainty angel fish can't decide which holiday they love best! Should they be excited Christmas is almost here? Or is Easter the best holiday of all? The two friends travel up and down Bubbletown and ask their friends which holidays is their favorite. Finally the duo meets with Grandma Harriet the hermit crab who teaches them the best holidays are the ones we spend with those we love! Grandma Harriet also gives the duo a tip on Brie's whereabouts. Will Muggles and Joy help police inspector McToothy solve the mystery of the missing starfish? Find out in Christmas Under The Sea!