Marquis and Lola have a new business. The owner of a jewelry company suddenly disappears with money and jewelry. His wife and business partner, Galina, is terribly scared. The police quickly close the case, blaming everything on the missing man’s affair with a young bank employee, Alena. But Galina is worried about one detail: her husband left a hippopotamus at home - an ivory keychain, which he never parted with. She hires a private detective, but he is killed. Now Marquis is her last hope to unravel the tangle of mysterious events and find out the truth, no matter how terrible it turns out to be.