The trio return to the dragon world which finds itself under attack by winged unicorns which threaten to destroy Wingfire Academy. However before the team can fight them, they must get Blaze, who has fallen into a slump from a previous defeat by the unicorns, back on his feet to help them.

Team Zero return to the Ball World to save its past from Rippen.

When Sashi's parents find out about her real job with Penn and Boone, Penn has Phyllis zap her and her parents into the Outer Space World.

Penn's emotions cause problems for the latest mission.

Penn has to stop Rippen from ruining a dinner in a sitcom dimension.

Penn, Sashi, and Boone must make the Princess Argelbleccht and Grinkon fall in love.

Vonnie must rescue Brock from the belly of a giant chicken.

Penn, Sashi, and Boone must travel to the three most dangerous places in the multiverse in order to free Penn's parents as Rippen plans to conquer the Most Dangerous World Imaginable with Larry and those with him after having to close its portal from the other side.