One-time stowaway April Lopez returns to the ship as a popular singer. However, she grows tired of the hassles of fame and decides that she would like to become a cruise director. Julie tries to show her the ropes, but April ends up creating havoc wherever she goes. A couple brings its four rambunctious children along on its second honeymoon. The woman repeatedly ignores her husband to tend to the children's needs, and April inadvertently creates further problems with their marriage. A buddy of Capt. Stubing's from his military days comes aboard, and is shocked to see the former USO star with whom he once had a romance. Due to a misunderstanding, each believes the other is to blame for cutting off their affair.