March 27, 1977. At 2:00 in the afternoon, a thick fog rolled into the usually quiet Los Rodeos Airport in Tenerife, in the Canary Islands. On the runway sat two fully loaded jumbo airliners. An explosion at a nearby airport had redirected air traffic to the undermanned airfield at Tenerife. Within three hours 583 people would be dead. This film reconstructs the moments leading up to the tragedy.