The Ex: 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, fiance Katya, who is about to become his wife. But the Internet makes you remember teenage love, after which a chain of inexplicable mystical events occurs with the future wife of a young man. The girl receives mysterious messages from her fiance's past. Because of them, her life turns into a nightmare.