Billy takes extreme measures when Marsha convinces him he has brought a curse upon himself. Billy invites a heroic warrior named Zartran to stay at his house.
Zeke, the King of Calzones, must defend his title when a rival chef enters the picture. Billy invents a grafting machine and starts adding different creature parts to his body.
Count Wretcher has a plan to travel to the Surface World and cover the Earth in sludge. When Billy's new friend Jared becomes fast friends with Zeke and Marsha, Billy gets jealous.
Billy and Zeke try to figure out Marsha's unexplained bout of klutziness. Zeke is blown away when his favorite extreme sports hero, Tommy X, arrives at their house.
Billy and Zeke help Marsha find romance, but an unexpected guest could ruin everything. When Billy and Zeke meet the neighboring Troggies, an epic sports showdown ensues.
Billy loses confidence in his hair, luckily he discovers a wig shop. When the Hag Witch visits her sisters, she gives Billy and Tony one order: stay out of her magical cabinet!
Zartran convinces Billy to pretend to be the nephew of a old lady to scam her out of her secret treasure. Billy is jealous of his new friend's wart and becomes obsessed with it.
Anaximander won't pay attention to Billy, so Billy finds a new pet. Zeke's habit of ignoring the trash on the roof gets him and Billy into a predicament.