Aleksandr Efremov

A German Army officer is captured by the Soviets in World War II and sent to a labor camp in Eastern Siberia. After five years of enormous hardship he escapes, commencing an incredible, arduous, danger-filled journey.

It's the Great Patriotic War. The Red Army has had to retreat in a hurry and left their top secret weapon, "Katyusha", behind. A group of eight soldiers is sent to do everything possible to not let Katyusha fall into German hands.