Help!

Help! is a movie starring John Lennon, Paul McCartney, and George Harrison. Sir Ringo Starr finds himself the human sacrifice target of a cult, and his fellow members of The Beatles must try to protect him from it.
An obscure Eastern cult that practices human sacrifice pursues Ringo after he unknowingly puts on a ceremonial ring (that, of course, won't come off). On top of that, a pair of mad scientists, members of Scotland Yard, and a beautiful but dead-eyed assassin all have their own plans for the Fab Four.