A story arc that began with the 2008 release of Iron Man reaches a kind of climax with next year’s release of Avengers: Infinity War, the opener in a two-part salvo that will close out Phase 3 of the Marvel Cinematic Universe with its release in 2019. Infinity War opens May 4, 2018, directed by Anthony Russo and Joe Russo with cinematography by Trent Opaloch (Captain America: The Winter Soldier).