When Captain America goes back in time at the conclusion of Avengers: Endgame, he is placing all of the Infinity Stones to where they were prior to the movie.
Avengers: Endgame involves time travel.
There are MAJOR SPOILERS for Avengers: Endgame below.
Avengers: Endgame has brought about some pretty huge changes for the MCU and it’s going to be interesting to see how everything works out from now.