In 1980s England, schoolboys Will Proudfoot (Bill Milner) and Lee Carter (Will Poulter) meet by chance in a hallway. Though the boys are polar opposites, Lee asks Will to help him make a homemade action movie, inspired by Sylvester Stallone's hit, ``Rambo: First Blood.'' Will, who lives in a strict religious environment, is only too happy to oblige his new friend.