The film focuses on a poker tournament—the Grand, as it’s called. Presented like a documentary, we get to know several people: Jack Faro (Woody Harrelson), who used to own a casino inherited from his grandfather but has recently been staying at a rehab center; Harold Melvin, a man who lives with his mother and consumes copious amounts of Brain Juice; Lainie, a housewife feeling restless in her marriage to Fred (Ray R…