Avengers: Endgame

spoiler

Captain Marvel rescues Tony and Nebula from space, returns the to the Avenger facility. They know Thanos used the Infinity Stones again and Nebula tells them where to find him. So the Avengers travel to a planet where Thanos is by himself farming. They find he's destroyed the stones and Thor cuts his head off in a rage.

Cut to 5 years in the future. Ant-Man is stuck in the quantum realm until a rat unknowingly releases him. He goes to find the Avengers, suggests they use time travel to solve their problem. They try to convince Tony Stark to help them. He's retired and has daughter so won't. They get Bruce Banner (who is half-human, half-hulk now) and he kind of cocks it up. Tony eventually realizes he can help so he does. They figure out time travel.

By the way, Thor is super fat.

Anyways, they try to figure out the best place to find the stones. There are 3 in New York in 2012, there is 2 on random planets in like 2013... another one, I forget. Anyway, they split up and go on an adventure to find all these stones. But Thanos (who's still alive in 2013) figures out what they're doing and finds a way to follow them into the future. So they get all the stones, bring everybody back (Hulk almost kills himself using the stones) but then Thanos arrives and just blows the every-loving shit out of the Avengers facility.

So then there's this epic battle with like almost every Marvel hero from the movies.

Anyway, a bunch of people do die. But they do get a past Gamora back, because she died in Infinity War. Here, they lose Scarlet Johansen and Robert Downey Jnr. Also, Captain America goes to return the stones to their correct time periods and decides to grow old.