Snorkland gets ready for a big Steam Festival, which is voluntarily called off due to a steam shortage. There is a reward for 5000 pearls for anyone who can go to the Source and try to restore the town's steam. The Snorks, along with Junior, travel to the Source where they find out that a space rocket particle had fallen on the steam source when a rocket blasted off into space a little while earlier.

The Governor unveils a new painting of himself in the town square, which is ruined by the mark of a red crayon. Interestingly enough, Casey was missing a red crayon from her set. Junior and his family blame All-Star and his friends for ruining the painting. Tooter later finds the red crayon and starts scribbling with it. Unfortunately, Junior catches Tooter with the evidence. Tooter is charged with defacing property, but when the trial begins, Tooter is nowhere to be found. The Snorks find Tooter by using Professor Galleo's secret weapon, the Silver Fish. While the Snorks find Tooter, someone else is scribbling red mustaches on the Governor's painting. The Snorks find Tooter being chased by a giant crab and almost gets caught in a bad sea current. Casey finds her red crayon when Baby Smallstar is found scribbling red mustaches on the painting! The charges against Tooter are dropped.

Everyone is having a good time at a carnival, everyone except Occy who is excluded from everything. He finds a love interest in a fishing lure in the guise of a girl octopus. This relationship takes a dangerous turn when a swordfish follows it along with Occy all over Snorkland. The Governor blames Occy for causing this whole mess and banishes him to the Great Beyond. The Snorks then help Occy out when the Swordfish chases him again. They find out that the cause of the whole trouble was the girl octopus lure and Occy has to give her up for the good of the town.

While on a field trip at the kelp factory, Tooter meets a hummerfish who follows him home. When the Snorks find out that the Hummerfish is to be killed, Tooter tries his best to protect him from Junior's dad. Tooter lets it go, but there is a whole lot of hummers in town and they are in a mad feeding frenzy.

In the middle of a seahorse polo game, a giant boot crashes down on the field. Everyone thinks that it is an alien from beyond the limits. Galeo tries to communicate with it while the governor thinks that the boot will attack Snorkland. Tooter finds out the truth about the so-called invader and examines it. While examining it, Junior comes up and Tooter plays a trick on him, making him think that the aliens are attacking. Junior starts a story that gets out of hand. Tooter tells All-Star that there are no alins at all. Galeo uses his machine to contact, but it calls a giant crab toward the boot.