Avengers: Infinity War belongs to the Marvel Cinematic Universe (MCU). This title was given to the story created to reunite all Marvel movies in the same “story complex” for the big screens. 18 movies have been released in this story line, including all the Avengers related movies, Black Panther, Spider-Man, Guardians of the Galaxy and Doctor Strange.
The franchise started in 2008, with Iron Man. However, to understand the plot behind The Avengers: Infinity War, you should be aware of the many other films released after the RDJ breakout hit and understand that the Infinity Stones have been present in this cinematic universe from the beginning. To make things a bit clearer, we are going to help you out by explaining what are these stones and why they are so important.
Why is it called Infinity War?
Mostly because (hold on, this is not a spoiler) Thanos will come for the Infinity Stones (Infinity Gems in the comics). He is obsessed with them and, if you did not notice, they are always popping up in the MCU. There are six stones in total and each one of them has a different power. Thanos’ plan is to reunite them into what is called the Infinity Gauntlet.
In the article below there are some minor spoilers. Not enough to ruin any of the movies but some information about the Infinity Stones so you can better understand what is at stake in The Avengers: Infinity War.
The Space Stone - Captain America: The First AvengerView Deal
The Space Stone was introduced to us while still in the first Captain America movie (2011) in the form of the Tesseract, a very important glowing cube. This stone allows interdimensional space travel and was present in several of the MCU movies. It was last seen in Thor Ragnarok.
The Reality Stone - Thor: The Dark WorldView Deal
The Reality Stone was first seen on screens during Thor: The Dark World (2013). This stone in the form of Aether, transforms matter into dark matter and seeks out lifeforms to feed from. The Aether was last time seen being delivered to the Collector, as “it is not wise to keep two Infinity Stones so close together” (considering the Space Stone is already in Asgard).
The Power Stone - Guardians of the GalaxyView Deal
You might not have noticed at first, but that artifact retrieved by Peter Quill a.k.a. Star-Lord in the first Guardians of the Galaxy was the Power Stone. As explained by Gamora: “the stone reacts to anything organic, the bigger the target, the bigger the power surge”. After the Guardians defeat Ronan the Accuser, one of Thanos' disciples, the stone was taken to the Nova Vault on Xander. This was the last time we (as audience members) have seen the stone.
The Mind Stone - Marvel’s Avengers: Age of UltronView Deal
With this stone it is possible to control and influence minds as well as alter people's perceptions. Loki had the stone for a while. Later, in Avengers: Age of Ultron (2015) Tony Stark decided to “connect” the Stone to his computer and gave life to Vision, an android created by Ultron, who now considers himself a mixture of Ultron and J.A.R.V.I.S (Tony Stark's personal assistant and computer). Vision has the Mind Stone in his forehead and was last seen During Captain America: Civil War.
Anyone that watched Doctor Strange (2016) saw the Time Stone in action. Also called the Eye of Agamotto in the film, this gem was in possession of the Masters of the Mystic Arts. We only get a little taste of the power of the Time Stone near the end of the movie. Who knows what Thanos could do with it?
We still haven’t seen the Soul Stone in the MCU yet, which leads us to think that this will happen during the Infinity War movies. The Soul gem is possessed by Adam Warlock in the comics, “the perfect human”, and grants total control of reality and can capture souls. The stone itself is sentient and desires to collect more souls.