"The Master" is a character study of a character study of a charismatic leader (Philip Seymour Hoffmann) and a troubled follower (Joaquin Phoenix). Amy Adams is Hoffmann's wife and contributes her share of the fine acting which is the strength of this weird, weird movie. It is overly long, and the pace is too slow. But the quality of the acting, particularly by Phoenix, makes it worth watching.
This is not a fast-paced action movie. If that's what you want, go see something else. But for an intriguing tale of the interaction of some very unusual people, try this one. It's worth sitting through.