Dave begins dating Princess Irmaplotz, but breaks up with her when he learns that she is evil. Irmaplotz is upset about the break up and sends an army of filthy pixies to attack Udrogoth./A nerd named Ned Frischman travels back in time and tries to take over the ancient world using video games. When everyone is hooked on the video games, Faffy, Lula, and Twinkle The Wonder Horse (Being The Only Ones Without Tumbs) must face off against Ned.

Evil Princess Irmaplotz summons fourth a cow like something milky to bite dave after he swims in the milk, thus in a month later when the moon is full, making dave a Were-Cow. After terrorizing the villagers, dave is bitten by a cat. He is bitten by an array of other things, including an Egg Beater and the Gym instructor. In the end the gang make dave bite his tongue with a sheet of paper, causing him to become a Wear-Dave. But Fang thought that he's a non-weary Dave so Dave is back to normal before Irmaplotz was surprised that the gang breaks the code making Dave back to Normal. In the next morning, Dave accidently bite Faffy thus Faffy becomes Faffy-Dave singing "Funny Bunny."

Dave finds himself coaching Udrogoth's Plunderball team in the big annual game, a job he knows nothing about. Things gets worse when the opposing team's coach is Dave's ex-girlfriend, Evil Princess Irmoplotz.