One day, a new arrival moves in at the home -- Rory O'Shea (James McAvoy), a lad about Michael's age who suffers from muscular dystrophy and can only use two fingers on one hand. This, however, hasn't stopped Rory from developing a sharp tongue, a quick wit, a taste for alcohol, and the courage to put the moves on any women who crosses his path. Rory can also understand Michael's attempts at speech, and Rory puts his outsized personality to work encouraging his new friend to become more outgoing and not to let life pass him by, despite his handicaps.