Cillian Murphy plays an obsessed physicist who works in unison with Matt Damon’s General Leslie Groves Jr. to come up with the atom bomb before the Nazis during World War 2 in the official trailer for filmmaker Christopher Nolan’s biopic Oppenheimer.

Released by Universal Pictures on Monday, the three-minute-six-second-long trailer shows Matt Damon yelling in an officer’s uniform and teaming up with Murphy’s J Robert Oppenheimer in an attempt to devise the bomb. It also gives glimpses of physicist Albert Einstein when Oppenheimer visits him. Emily Blunt plays Oppenheimer’s wife who talks with him about his moral dilemma. We also see the moment of remorse for Oppenheimer’s after his bomb is used to annihilate Nagasaki and Hiroshima of Japan. The clip ends with Robert Downey Jr. as Lewis Strauss, one of the founding commissioners of the US Atomic Energy Commission, grilling Oppenheimer.

Watch the trailer here:

Shot on IMAX cameras, the trailer of Oppenheimer promises to present spectacular images and soul-stirring performances from the ensemble cast. The film also stars Florence Pugh as psychiatrist Jean Tatlock, Benny Safdie as theoretical physicist Edward Teller, Michael Angarano as Robert Serber and Josh Hartnett playing pioneering American nuclear scientist Ernest Lawrence. It also stars Rami Malek and Kenneth Branagh in supporting roles.

Based on the 2005 book American Prometheus by Kai Bird and Martin J. Sherwin, Nonal wrote the screenplay of Oppenheimer, which is produced by Emma Thomas, Charles Roven and Christopher Nolan. The movie will hit the cinemas on July 21.