Based on a real postwar incident the film is about an army unit trying to dispose unexploded bombs to save a small town. It was Tarkovsky’s and Gordon’s second film, produced while being student at the State Institute of Cinematography (VGIK).
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The two colaborations with classmate Aleksandr Gordon show that Tarkovsky hasn't really discovered his vision yet but was nevertheless a talented film student, this particular short borders on propaganda at times but presents some impressive set pieces and careful storytelling, even if we sometimes get the feeling that some of its subplots are merely used as time fillers.