A private Zhenja Kolishkin, the fragile intellectual who grew up on Moscow's Arbat, is completely unfit for a war. Having gone on a new year's eve to receive mail, he comes across a German dugout. He's lucky to escape safely, but punishment in guardroom is inevitable. Zhenja's unenviable destiny is brightened up by Zhenechka ('Little Eugene'), she is a radio comminications soldier in a Katyusha platoon ('Katyusha', a tender name for Ekaterina, is also a nickname for famous WWII artillery installation). Time will pass, and they will meet in an enormous empty house in the city freed from the Nazis, and will play a childrens game Cat and Mouse... This is one of the most gentle pictures about war.