The story of how social networks and instant messengers are changing the life of a modern person. It has been several years since a 16-year-old teenager posted a photo of his girlfriend in the general chat, hoping to boast to friends. Now he has a happy adult life: work, friends, fiancée Katya, who is about to marry him. But the Internet suddenly reminds him about a teenage love, after which a chain of inexplicable mystical events occurs with Katya and their friends. The girl receives mysterious messages from her fiancé's ex. Because of them, her life turns into a nightmare.