For the first time, two big movie franchises will meet. Marvel has been building up to Avengers: Infinity War since Thor was released in 2011. Although the events of which the Guardians of the Galaxy will meet the Avengers are still unknown, it’s safe to assume that the battle for the infinity gems will be so big that the two teams will have to unite.

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Actors Robert Downey Jr., Tom Holland, and Chris Pratt at the Marvel Studios while filming Avengers: Infinity War on Saturday, February 11, 2017.

Click here to check out some behind the scenes footage and interviews from Marvel Entertainment.