There are many wedding customs. One of them is to ride in the wedding procession across seven bridges. But no one knows that the Seventh Bridge lies between the world of the living and the world of the dead, and blood spilled on it can open mysterious gates. Alevtina, an ordinary schoolteacher, had no intention of solving any riddles or walking along the thin edge between life and death. She wanted quiet family happiness with her chosen one. But fate decided otherwise.