Shadow hunter Ostrich has once again been given the important mission of locking up the magical Summer Shadow suit. Ostrich is on the way to the new super-secret hiding place on an island, with the shadow chest safely tucked inside a boat, when a storm pulls in and a big wave suddenly washes over the whole boat!

Best friends Leah and Idris usually spend their time looking for trash on the beach. Today, though, they are on the hunt for the Summer Shadow. They have read a magical rhyme that is said to draw out the number one mischief-maker. No one knows if the magical suit is able to travel by ferry to the island, but Leah and Idris are ready if it does. At least, that’s what they think…