Irwin tries to secretly snatch Becky's journal to see what she thinks of him. Meanwhile, Zarg plans to throw a feast of new tastes for the Monsters. Dudley thinks the others don't take him seriously because of his height and tries to become Monster Leader. Meanwhile, Stan reverts to being a primitive beast without Dudley's guidance.

When Stan teaches the monsters how to fish, Vink catches a submarine with a crew on board that the monsters plan on eating. Stan constantly beats the Nerds at physical competitions so Dudley holds a Nerd Olympics hoping he can finally defeat him.

Skur thinks he can use Irwin's snoring to finally remove Zarg from the picture.

Becky is forced to spark some romance between the constantly bickering Urp and Durn to prove her theory that it’s courting season on the island. When Dudley pigs out on a potentially exploding fruit, he can't let his temper get the best of him or he'll be blown up to nerd bits.

Becky saves Zarg's life, and Monster Law dictates that she must now eat him. Unfortunately she's a vegetarian. When Stan realizes he has more in common with the Monsters than with the Nerds, he becomes Vink's new best friend.

When Dudley declares Monster dung a new form of currency and collects all the dung on the island, the Monsters try to steal it back. Durn threatens to use Lyle's beautiful singing voice as a weapon and takes over as leader of the Monsters.