Just as Rube and his two best friends, Boob and Pearl, are busy agonizing over the Switcheroo Dance and planning Pearl's campaign for class president, they discover that Beechwood was once a sundown town and Rube realizes that racism and bigotry still exist there.

When Rube Goldberg stumbles upon the Null Corporation's construction of a massive machine in his beloved junkyard, he starts receiving anonymous messages and teams up with his friends to investigate the company's intentions before it is too late.