An air base for forest protection is located not far from the border. A team of parachute firefighters takes off to extinguish the fire. Newcomer Valentin Volgin shows indecisiveness during his first flight and is late with his jump. Painfully experiencing his first failure, he avoids the gaze of the pretty instructor Irina Aleeva, who witnessed his unsuccessful jump. And then the team receives the task of providing assistance to the border guards, and Valentin, after a tense chase through the burning forest, overtakes and detains the saboteur.
Valentin Volgin, parachutist-firefighter
Irina Aleeva, parachute jumping instructor
Alexey Ryzhov, firefighter commander
Boris Nikolaevich Shmelev, saboteur
Pepelov, radio operator
Boris Valentinovich Yakovlev, counterintelligence major
Grishchenko, captain of counterintelligence
Rumyantsev, counterintelligence major
young saboteur
Ivan Nikolaevich Leshchuk, head of the air base
Grigory Filippovich Fedotov, forester
Shcherbakov, counterintelligence colonel