Without a Shirt follows one crazy day in the life of two feuding brothers, Daniel and Anthony. A road trip to the country takes a turn for the worse when Daniel insists on stopping the car for a toilet break. The events that follow escalate with absurd comical results that eventually bring two brothers closer together and reinforce that fundamental rule of life that 'everything happens for a reason'.

Ben Hall is drawn back into bushranging by the reappearance of his old friend John Gilbert. Reforming the gang, they soon become the most wanted men in Australian history.