A Soviet aircraft crashes on Nazi-occupied territory. Pilot Grivtsov and his radio operator Katya survive, as well as flight navigator Linko, who was ejected from the plan. Each must find their way, performing daunting military tasks and fighting to survive. Complications arise, however, when an act of sabotage committed preflight shows that Grivtsov is a traitor instead of a hero. Will he be executed as a traitor?

A Soviet aircraft crashes on Nazi-occupied territory. Pilot Grivtsov and his radio operator Katya survive, as well as flight navigator Linko, who was ejected from the plan. Each must find their way, performing daunting military tasks and fighting to survive. Complications arise, however, when an act of sabotage committed preflight shows that Grivtsov is a traitor instead of a hero. Will he be executed as a traitor?