Spit's pet Varch comes to live with the family and becomes amorous of the repulsed Heather, so her siblings try to teach her a lesson by making Heather believe that she killed him. Meanwhile, Bobut throws a tantrum when Sally puts him on a pudding-free diet.
Doug gets a promotion after Bobut uses mind control on Doug's boss. When Snizzy recombines some DNA and unleashes a giant frog on the town, Doug realizes he's not spending enough time with his family and returns to his former job.
Snizzy invents a cloning machine, which Bobut uses to make an insipid clone of himself so he can sneak off to the Stinky Stevie toy factory. But before long, he winds up in the clutches of two obnoxious, rich children.