A small-time hustler and his 17-year-old son live along the Danube River, struggling to pay off debts to a powerful gangster. To settle their debt, the gangster demands that his son marry his sister, who is eager to find true love. However, the son has his own romantic feelings and the sister is waiting for her perfect match.

Black Cat, White Cat
On the Danube riverbanks, a father and son survive by breaking the law, but their luck changes when they must sacrifice their son's freedom to settle a debt by marrying him to a gangster's sister.