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.
Late one night when ten-year-old Zack hears strains of "Heartbreak Hotel" coming from the refrigerator, he discovers the possibility that Elvis lives on as a turnip.
"Look! Up in the sky! It's a a bird! It's a plane! It's...it's...a UFO filled with cows from outer space?!! The President has sent Maximum Boy on another mission..."--Cover p. [4].
While visiting Dizzyland near Los Angeles, Klatu, Lek and Ploo, the three alien siblings from the planet Loogl, find a fuzzy little alien named Mu in the sideshow zoo of the amusement park and decide to set it free.