Wish Upon a Shark (Mermicorn Island #4)

Half mermaid, half unicorn, and totally adorable! The best time of the year has arrived— Mermicorn Island's annual costume contest. Lucky loves designing ever more elaborate costumes for his Fintastic Four, in the hopes of finally taking home the grand prize. But when a fierce-looking shark crashes the ball, everyone swims for cover. Can Lucky save the day?