Although this 2011 film is the fifth movie in the Marvel Cinematic Universe, it's the first flick that should be watched because it takes place decades before Iron Manand The Avengers. It also introduces viewers to Steve Rogers, aka Captain America, an essential character in the universe.
The film that started the Marvel Cinematic Universe comes in as the second movie to watch. Iron Man, of course, gives us our first glimpse at billionaire playboy Tony Stark as he builds himself a suit of armor.
In the post-credit scene, Nick Fury approaches Stark to discuss the Avengers Initiative.
With nearly the entire Avengers crew assembled, the only major character missing is the crown prince of Asgard. The first Thormovie, which takes place at the same as The Incredible HulkandIron Man 2, introduces the god of thunder and other characters essential for The Avengers.
The post-credit scene, directed by Joss Whedon, helps set the stage for the ensemble superhero movie.
The sequel to 2011's First Avengertakes place two years after The Avengers. In the film, Rogers -- who's now working with S.H.I.E.L.D. -- teams up with Black Widow and Falcon to stop the Winter Soldier, Rogers' best friend Bucky.
Of course, Guardians of the Galaxybegins in 1988 when Peter Quill is abducted by aliens after his mother dies. According to a graphic in GotG, the first film in the franchise takes place 26 years after his abduction, which means this film is set in 2014.
Director James Gunn confirmed to Slashfilm that Vol. 2 is set just three months after the original film, which makes sense since Groot is still a baby in the sequel. Despite fitting into the chronology here, Vol. 2 is technically a part of Phase 3.
In one of the post-credit scenes, the Grandmaster is seen dancing. He'll appear in Thor: Ragnarok.
The sequel to 2012's The Avengers is the penultimate film in Phase 2 of the Marvel Cinematic Universe. The ensemble action movie brings together the heroes while introducing the Vision and twins Pietro and Wanda Maximoff.
In the post-credit scene, the flick helps set up the future of the MCU by showing Thanos with Ulysses Klaue, villain in the upcoming Black Panther film.
This upcoming film is set in the 1990s. But you should still watch it after Infinity War. The transformation of Carol Danvers (Brie Larson) to Captain Marvel will surely influence how the Avengers defeat Thanos.