When Zack goes to Florida to visit Mel & Shirley's Wonderful World of Dolphins, he is surprised to discover that he can understand and speak to dolphins, which enables him to solve a kidnapping.
Zack's discovery of a parallel universe causes him a few tense moments when his parallel self, Zeke, steals his retainer, forcing him to go into Newer York to get it back.
Zack feels that a supernatural force is at work in his apartment when he encounters floating television sets, pancakes that flip by themselves, and a ghost named Wanda.
Zack's science fair partner, Andrew, has always boasted and told lies, but now each time Andrew fibs his butt gets bigger, and Zack must find a way to help before their science project is destroyed.