Sara hurts her finger while building a raft for herself and Nick takes over the construction. It's a beautiful raft and Sara christens it Barbie. Nick forbids her to sai it alone so Pat O'Gorman invites himself along. The two of them set off and soon run into difficulty, they are blown off course and lost. In the end it is little Sara who proves the most responsible and Pat learns he's not as clever as he thought he was.