The performance at the main dance hall in Zagreb was fateful for Perica - he resolved all disagreements with Žnid, and Nada left her fiancé that evening. It seemed like everything came into its own. But then something happened that no one expected - Zagreb was hit by a catastrophic flood. The entire southern part of the city, Trnje and Trešnjevka, found themselves under water. But the muddy Sava water in that dramatic night full of uncertainty will clarify some relations and bring unexpected alliances ...