With filming on the upcoming Avengers: Infinity War kicking off last month in Atlanta, Marvel has unveiled a production trailer which offers us an initial glimpse of the movie. Opening up with a backstory about Infinity Stones, the clip provides behind-the-scenes interviews with the cast including Robert Downey Jr., Chris Pratt and Tom Holland. Directors Anthony and Joe Russo go in-depth about the movie’s plot and characters, revealing that the heroes will eventually face Thanos in this film. “Avengers: Infinity War is the culmination of the entire Marvel cinematic universe as started in May 2008, with the release of Iron Man 1,” producer Kevin Feige mentions. Watch the clip above and catch the flick in theaters on May 4, 2018.