Search for treasure in the underwater world! Ride on a Dorrie with LEGO® Mario™, LEGO® Luigi™ or LEGO® Peach™ (figures not included) and explore the shipwreck. Oh no! The treasure chest is locked so you must find the key. Look under the ship’s mast, but don’t get chomped by the Cheep Chomp! Spin the platform to open the clamshell and reveal the Key Block. Open the treasure chest and get the gem!