This movie is mind blowing extraordinary.f u have not watched any part of avengers first watch all the movies then watch end game.tony stark makes time machine.avengers of all parts are grouped to defeat thanos from another timeline.they killed thanos twice in this movie.if u have not watched this movie it is my request to you to watch this movie.this movie is the top grossing movie of world and beaten the record of avatar means something is there know, otherwise how it became top grossing movie.