Jack Doherty is a walking mid-life crisis. Overweight and lonely, newly-divorced after a spectacular act of infidelity on the part of his wife and close to losing his job as a hotshot newspaper columnist, he joins a gym hoping for an existential do-over, if not washboard abs and bulging biceps. Another shot at romance wouldn't hurt, either. One day a mysterious new member shows up: an incredibly-fit octogenarian who seemingly defies the ravages...