Polina Fedotova worked in a nursing home. Her life was gray, like washed pajamas. And then one day everything changed. Cousin Lyuda invited Polya to live in her country house and promised to give her a job. And she went on vacation. But Polina was in vain to rejoice - troubles began on the very first night. She woke up and... saw a ghost outside the window. Screaming, Polina ran out into the neighbor’s garden. The mathematician Nikiforov did not sleep, but proved another theorem. And here's this redhead! How to live! How to work! Nikiforov was forced to deal with other people's problems. Well, he couldn’t leave this ridiculous person in trouble. He dealt with the ghosts, but the neighbor began to be chased by some strange characters with a syringe at the ready. Who could this red thing annoy?...