The episode begins with The Action League washing the Action Mobile. When The Chief tells Stinky and Thundergirl they missed a spot, Meltman and The Flesh accidentally spray The Chief with a hose, pushing him into the road. The Chief then gets run over by a car, whose driver is littering. The Action League climb aboard the Action Mobile and chase after the litterbug, accidentally hitting the Chief in the process. The Chief worries over the fate of his new car.
The litterbug is none other than His Dishonor, the Mayor, who plans to dump his garbage anywhere he pleases. When the Action League catch up to the Mayor, he tosses his garbage at him. One of the pieces of paper he throws covers up the action mobile, causing them to lose the Mayor and crash into a fruit stand and some boxes.
A few minutes later, The Flesh hopes they catch The Mayor soon. Meltman hopes so, too, because he has to go to the bathroom. When the paper that was blinding them before flies off, they suddenly realize they are about to fall off a cliff. As they fall, Thundergirl leaves and decides to chase after The Mayor herself.
Meanwhile, the Mayor is still littering wherever he pleases. Thundergirl catches up to him and tells him to pull over, but The Mayor tells Thundergirl that she is about to become roadkill. Thundergirl then notices she is about to get hit by a van. The Narrator then asks if Thundergirl will be run over by the van, and if the Action Mobile will survive its fall, and tells the viewers to stay tuned for part 2.
In the second act, Thundergirl gets hit by the van and lands on the ground. Thundergirl isn't hurt but that, but she is hurt when The Action Mobile falls on top of her. The Flesh and Stinky tell her to climb back aboard, as the Mayor is getting away. The League then chases after the Mayor. Eventually, the two meet face to face. The league charges at The Mayor, but since The Mayor's car is much bigger than the Action Mobile, it flattens it when it runs it over. The Mayor is sure he's rid of the league and has won, but then he sees a Road Closed barrier and is unable to stop his car. His car crashes through the barrier and down the cliff, setting itself on fire. The League, who has survived being flattened, ask themselves what drove the Mayor to littler. Meltman isn't sure what it is specifically, but he's sure it's flammable. The Mayor, still in his burning car, says, "Is it hot in here, or is it just me?" and the League laughs at him as the story ends.
- Thundergirl (While the Action Mobile falls off the cliff): "Uh, this is my stop. Thundergirl, away!"
- The Flesh: "I hate it when she does that."
- The Mayor: "Ha ha! I don't give a hoot, I pollute!"
- The Flesh: "I spy with my little eye, something that begins with the letter "L".
- The Flesh, Thundergirl, Stinky Diver, and Meltman: "The litterbug!"
- The Mayor: "Bawk bawk bawk, I win, losers!" (Sees a ROAD CLOSED sign) "Then again, maybe it's a draw."
- When The Mayor says, "I don't give a hoot, I pollute", he is referencing Woodsy Owl's motto, "Give a Hoot, Don't Pollute!".