Jelena Mitrović

Viorel is 12 years old boy and he lives with his grandfather near the Danube river. He helps his grandfather to fix the figurines of an old merry-go-round. Mirko is the son of the local police officer on the Serbian shore of the Danube. The two kids have a remote controlled small boat which they use to send each other various objects. When Viorel finds a gun in his grandfather's attic their lives will change.

Room 405, is a room in children's hospital. In it, happy and unusual things happen continuously, because, of course, not even a hospital can do anything to a child's vitality. The favorite Dr. Marković is played by Goran Sultanović, and the strict head nurse of the hospital is played by Milena Dravić.