Endgame was spectacular on all levels. However, the thing that you will want to do is bring tissues and stay for the very end because there is a callback to the first Iron Man movie.SPOILERS: The Avengers seem broken and desolate in the beginning; however, this adds to the emotional stakes of the movie. Then, seeking hope, the Avengers, for help with their time travel machine, hurry to Tony Stark; instead of wanting to face Thanos, Stark thinks their actions on the timeline will worsen the timeline and the universe itself. Thus, they go to Bruce Banner, who is now Professor Hulk, he agrees to help the remaining Avengers. Then, the Avengers, including Tony Stark, all time travel to the past gathering the Infinity Stones. Past Thanos, finding them, goes to the future with them and utterly destroys them at first. But, then the snapped Avengers return causing a whole battle between Past Thanos and them. Lastly, Stark grabs the Infinity Stones and snaps Thanos and his forces out of existence. All in all, this was the best MCU movie ever. Reuniting Iron Man and Spider-Man, Cap and Peggy Carter, Thor and his mother were the second to best moments in superhero history. Stark's and Natasha Romanoff's deaths were the saddest, most heartbreaking moments in the film. So, BRING TISSUES!!!