Saturday's Warrior (1989)

Jimmy, a teenager growing up in an ordinary LDS family, wonders about what's coming next in life. His sister Julie has a boyfriend on a mission; she plans to marry him when he gets home. Jimmy's twin sister Pam is confined to a wheelchair and wants to make things good for Jimmy. Jimmy doesn't seem to care about his large family and wants to do his own thing. When Jimmy hears that his mother is expecting yet again, he leaves in anger. His family wants him to return so they can love him, but he doesn't want their love.