A biker gang visits a monastery where they encounter black-robed monks engaged in worshipping Satan. When the monks try to persuade one of the female bikers, Helen, to become a satanic sacrifice the bikers smash up the monastery and leave. The monks have the last laugh, though, as Helen, as a result of the satanic rituals, is now possessed and at night changes into a werewolf, with dire results for the biker gang.

A group of people from different backgrounds have one thing in common: when they hear the world "gumball" whispered by one of the others, they know that it's time for the Gumball Rally: a no-holds barred, secret, winner-take-all rally across the USA.

Harry Collings returns home to his farm after drifting with his friend, Arch. His wife, who had given up on him, reluctantly allows him to stay, and soon believes that all will be well again. But then Harry has to make a difficult decision regarding his loyalties and priorities.