A group of Ukrainian women are forced to work in the mine under the supervision of cruel enemy soldiers. When the soldiers are forced to retreat and decide to blow up the mine, the women organize a guerrilla action to stop them.

This is a film from the series of so-called "defense" films, which presents a hypothetical "scenario" of a future war. The crew of test pilot Sergei Novikov makes a long non-stop flight on an airplane of a new design. Novikov's son, Yurka, a passionate inventor, manages to contact his father using a transmitter he designed himself. Just before landing Novikov felt bad - an old leg wound, received ...