The will of the well-known artist Eduard Listov disappoints his relatives. He left half his fortune to an illegitimate daughter, Marusya Kirsanova. She lives with her mother in deep provincial obscurity. Marusya is urgently summoned to Moscow. They want to get rid of the girl as soon as possible, by any means. But on the train she meets a charming adventurer, Edik Obolensky, and—by jerking the emergency brake—she sets off with him in search of adventure. And she forgets her small bag with documents in the carriage.
It’s found by Maya, Marusya’s peer. On the Three Stations Square, a panicked Maya gets into an accident—right under the wheels of the car in which Listov’s widow is riding to meet the young heir. Maya is taken for Eduard Olegovich’s daughter and is rushed to the hospital with serious injuries. And then someone from the large Listov family makes the first attempt to kill the girl…