The Lighthouse is losing business to another restaurant, the Aloha, and Peter can't figure out why, since their food is terrible. He takes his sons to the restaurant to see what the attraction is. They quickly find out--it's the floor show featuring the sexy ""Cocont-a-Go-Go Girls."" They also find out that Murray has been there 21 nights in a row! Business is so bad for the Lighthouse that Peter may default on a loan. Murray offers to use some of his trust fund money to help out. Peter is reluctant, but he lets Murray become part owner. Mr. Collins wants to make a commercial for the Lighthouse, but it's Murray's money doing the talking as he directs a silly pirate-themed ad. Peter decides to shut down the Lighthouse. Jason comes up with a sceme to put the Aloha out of business. Murray will apply for a job there as a ""Coconut Girl"" and force a lawsuit. In the end the boys all get jobs at the Aloha and run off their customers. The Lighthouse is back in business and Murray is bought out as