One beautiful day at the beach, Linda and Erik see a lobsterman pulling up traps. Linda and Erik are curious about how he catches lobsters. They ask their father about it and he takes them down to the pier to meet his friend, Big, Joe, the lobsterman. Big Joe invites them to come along with him for the day to find out all about it. Join Linda and Erik on their first lobstering expedition. It is an exciting and informative adventure at sea, where they learn about the age-old trade of lobstering and encounter a variety of sea life—including an uninvited shark!