Zack falls in love for Marissa, a girl who has amnesia and who Woody believes is a mermaid. Woody hires London to be a secret spy to find out the truth about her. Meanwhile, Cody is upset with the amount of towels the ship's guests use and makes his own "green" initiative. When Cody is fired for tricking guests of their towels, he dresses up as monster and steps onto his soap box made of trash to get the guests and Mr. Moseby to listen to his ideas, get the ship on a "greener" path and get his job back.
