From the very beginning, Antonina felt like a failure—especially because of her loud-mouthed uncle. But when she was offered to live in a country house with the Samokhin family and look after their dogs, she agreed. Soon, she discovered a corpse in the house, learned that her dog had been poisoned, and found an antique casket that she couldn’t open. It seems the casket holds something valuable, and because of it, suspicious people keep appearing in the house.