Plot synopsis: In the summer of 1945, between the Victory over Germany and the war with Japan, 10-year-old Petka from a Far Eastern village tries to save a dying friend from a mysterious illness. But the only one who can help him is the Japanese prisoner Hirotaro from a military camp nearby. Petka and Hirotaro will have to find a common language, trust each other and call for help not only science, but even ancient spirits.