Aaron and Trip run out of weed, when their dealer, Grandma, is busted. After a row with his longtime partner Lucy, Aaron is further depressed when she leaves him. Finally they manage to score some weed, but the dealer is about three hundred miles away in Birmingham. But being desperate they decide to give it a go. Trip convinces his troubled neighbor Clive that he needs a lift to see his Gran, who is on her last legs in Birmingham. Clive falls for it hook line and sinker, but the journey will be a learning curve for all of them.