THOR: RAGNORAK--MOVIE--(PG-13)--Marvel Studios: Thor (Chris Hemsworth) is imprisoned on the other side of the universe on the planet Sakaar. Racing against time to stop Ragnarok, the destruction of his world and the end of Asgardian civilization at the hands of the ruthless Hela, he must first fight his fellow Avenger, The Hulk, Bruce Banner (Mark Ruffalo) in a gladiatorial contest.