The banker and his wife murdered, kidnapped from their hiding-place a large sum of money. The first falls under suspicion of their son, a drug addict, but he denies his guilt. Then attention switched to the consequences of a drug dealer who threatened his son with death banker. But the young detective Shchedrov, convinced of the guilt the addict continues to prosecute the son of the deceased couple, and detaining the young man, knocks out his confession.