Igor Dugin is a collector. And there is no such client who could resist Igor's armor-piercing abilities to return funds borrowed from the bank. But not all of his colleagues are also successful. One of them, Anton, makes a bet with Igor, offering to take on the most hopeless debtor – the artist Lopatkin. An experienced pro Dugin quickly finds what to take from an artistic silverless ring – an antique precious ring. But Lopatkin takes an extreme step – he eats the family treasure. And now the collector, who even has almost no time for his beloved girl, is forced not to part with his ward – until the ring is released naturally...