Summary[]
Jimmy and Beezy are testing jetpacks made and piloted by Heloise, and they notice a party going on nearby. Heloise realizes that it's Weavil day and becomes super excited, while Jimmy asks Beezy what Weavil day is. Beezy explains its a day for cheating, no-good Weavils to get together to cheat and be no-good, still bearing a grudge against the critters for previous times he was scammed by them. After learning the festival has tons of pies, the boys try to get in but are blocked by the bouncer for not being Weavils (who only let Heloise in because he's scared of her.) The boys plan to sneak inside using 'Fake Weavil in a Bottle' body rub with moisturizer to disguise themselves as Weavils. Lucius learns what the two are up to and is proud of Beezy for crashing the Weavil party.
Jimmy and Beezy make it in after guessing the password (Heinous Stinks) and Beezy literally dives right into the pies. A large Weavil approaches Beezy about eating the pie and joins him, the two become fast friends. Heloise cheats at games and wins Jimmy loads of prizes, Beezy tells them to get a booth while he and his new pal continue to have fun and eat sweets. The time comes for the traditional tossing of the Heinous statue into lava, and Beezy interrupts the Chief Weavil's speech to push the statue in. The lava splashes onto Jimmy and Beezy and wipes the Weavil disguises off of them, revealing their identities with the chief labeling them as spies. The chief accuses Lucius of sending them to destroy Weavil day and in accordance with the Heinous-Weavil-treaty he challenges him to a one-on-one boxing match. Lucius laughs at the chief, who was injured when the statue fell on him, and accepts the challenge (winner gets a nice gift basket).
Weavils show up en masse for the match, which is referee'd by Heloise. Announcing the competitors, Lucius is annoyed that his cheering section is only his son and Jimmy. Chief Weavil reveals that according to the treaty, due to personal injuries he's allowed to substitute his next of kin in his place; which is his son Brutus, the Weavil Beezy befriended. To get out of fighting the buff Weavil, Lucius fakes a paper cut and forces Beezy to take his place. The two son's don't want to fight, they'd both rather eat pie, but Brutus chases Beezy anyway. Jimmy makes a plea to the Weavils that this isn't the spirit of Weavil Day but no one listens. Brutus can't bring himself to beat up Beezy and a fight breaks out between the rest of the Weavils, Lucius, Jimmy and Heloise. Jimmy is thrown onto the statue of the two leaders and sends it crashing down onto everyone, injuring all and getting Lucius and the Chief to declare a truce. Weavil Day resumes with the focus altered from hating the Heinous's to hating Jimmy. And everyone laughs and has fun.