Ep 21. The Egg-Pire Strikes Back Part 1

The Adventures of Jimmy Neutron, Boy Genius season 1 episode 21, titled "The Egg-Pire Strikes Back Part 1," is a continuation of the "Egg-Pire" storyline that began in the previous episode. Jimmy and his friends are still trying to find a way to reverse the effects of a mysterious substance that has turned all of the adults in Retroville into babies.

In this episode, Jimmy and his friends discover that the source of the mysterious substance is coming from outer space. They decide to build a spacecraft to travel to the source of the substance and put a stop to the Egg-Pire's plans. Along the way, they run into various obstacles and challenges, including a group of angry aliens who are trying to stop them from reaching their destination.

As they continue their journey, Jimmy and his friends begin to suspect that someone on their team may be working for the Egg-Pire. They try to figure out who it is while also battling the aliens and trying to reach the source of the substance.

Overall, "The Egg-Pire Strikes Back Part 1" is an action-packed episode that sets the stage for the conclusion of the Egg-Pire storyline. It features plenty of humor, suspense, and adventure as Jimmy and his friends embark on a dangerous mission to save their town and restore their parents back to their normal ages. Fans of the show will enjoy this episode for its strong storyline continuity, exciting action scenes, and lovable characters.