In the thrilling conclusion to the Herbert's Wormhole science-fiction series, the heroes think their days of time-traveling and alien-battling are over. Alex can go back to his video games, Herbert to his inventions, and Sammi to her extracurricular activities. Then they discover that their old enemy GOR-DON is in Merwinsville, along with a mysterious new villain. The trio has to travel through time again to save the present and the future!
Cartoon illustrations add to the thrills and the fun. The silly sense of humor in AeroStar and the 3 1/2-Point Plan of Vengeance will appeal to readers who love Captain Underpants and Tom Angleberger's Origami Yoda series.