Lucky, a little toy elephant, is out whale watching with the family and girl he lives with, when suddenly he slips and falls into the sea. His family watches as a group of seals start playing with Lucky – this is only the beginning of his marine adventure! Lucky meets sharks, an octopus, some fish and a whale! After a visit to the bottom of the sea, and with some help from his new friends, Lucky is returned to his family in the arms of a sea captain, after a miraculous rescue mission.