Scoutmaster Lumpus resolves to catch a fish in Leaky Lake, and doesn't want help from the Jelly Beans. The Squirrel Scouts learn that the Jelly Beans are really from another planet.

Patsy arrives just in time to save the Jelly Beans from their new pet snake, and Slinkman is disappointed when he finds out that the Jelly Beans have spent all of their box car money.

Scoutmaster Lumpus tries to make the Jelly Cabin turn their lights out, and Lazlo helps Raj to prepare for the camp swimming test, however, Raj is terrified of the water.

Lazlo shows off his new best friend - a parasitic leech, and the Bean Scouts take on the Squirrel Scouts in a contest for the right to claim the best mud puddle in Prickly Pines as their own.

The gang send Lazlo, Raj and Clam out of the camp so that they cannot ruin an important inspection, and the Jelly cabin discover a treasure map on Raj's backside, made out of mosquito bite.

The Jelly Scouts try to stop Lumpus from cutting down an ancient tree, and Raj goes marshmallow-crazy and it's up to Lazlo and Clam to help him shake his sweet tooth.