Slam Duncan and his mountain biking chain gang refuse to let property developers take over the hill where they train, but when the developers try to gain support with a paintball weekend, their fun quickly backfires.

Slam and the father of his arch-rival Punk have both seen the course of a new cross-country bicycle race before it is announced, and Slam must decide whether or not to tell his friends and start practicing there, even though logging in the area would make it dangerous to do so.

Slam Duncan and his fellow mountain bikers, having just learned how to ride the giant jump, the Dragon, are now determined to out-jump their arch-rival, Punk Tuer, whose bike has a secret weapon.

Slam Duncan and his mountain biking Chain Gang stage a hunger strike to save their racing hill from developers, hoping their appetite for biking will outweigh their appetite for cheeseburgers and French fries.