In the early days of the Cold War, a top-secret mission involving a massive US Air Force B-36 bomber takes a harrowing turn when the aircraft suffers a catastrophic engine failure over the rugged mountains of British Columbia. As the crew struggles to keep the crippled plane aloft, they are forced to make a desperate decision to abandon the aircraft, leaving behind a mystery that has haunted aviation historians for decades. This gripping investigation follows a team of experts as they journey to the remote, treacherous crash site to uncover the truth about the bomber's final moments and the fate of its potentially deadly nuclear cargo.