October 1941. Thousands of fascists troops are advancing on Kalinin to capture the city and therefore open a direct route to Moscow. There are two thousand people able to defend the city and they are without tanks or artillery. The only hope of holding the enemy off is in the fifth infantry division convoy, who are about to pass through Kalinin station. But saboteurs intend to do everything to keep this from happening. The head of the Kalinin garrison, Major Sysoyev, struggles to keep order and calm in the city, and himself falls under suspicion of involvement with the subversive enemy group.

Sasha is a young and daring hockey player. After he was kicked out of the team, he and his mother, a doctor, move to another city. Here he and his mother will have to not only become part of their new team, but also build a personal life and find mutual understanding.

The story of how Soviet troops were surrounded and sieged in the Adzhimushkay quarries. The action takes place in 1942 on the Crimean peninsula.