A group of young people goes along the river to an old flooded church. At night, an eerie funeral bell ringing is heard on the shore, chilling horror to the bones. And in the morning, young people discover the body of a girl nearby. Fearing that they will be accused of murder, they decide to drown the body in the river. Ten years pass. Suddenly, all the participants in that terrible attack, one by one, receive calls on their mobile phones - a bell can be heard. Everyone who receives such a call dies from an accident... Like a phantom from the other world, someone takes their lives. Private detective Oksana takes on the investigation, and soon realizes that her life is under threat...