One can pretty much always guess the general outline of a Marvel—or any superhero—movie before actually seeing the movie itself. Some villain threatens innocent lives. The hero steps up to fight the villain. After a brief setback where it seems the hero has no hope, the hero will inevitably win. The good guys come out on top. And even when all the heroes die along with half the population of the known universe, you can be sure that in a superhero movie they will inevitably come back in one way or another. Victory is certain. The stakes don't exist. That has been the case throughout almost every MCU movie (with the exception of Black Panther where good and evil is less certain) and the Avengers movies.