For the first time in her lie, Sun-woo begins to dream of ever-lasting love with her junior staff, Dae-yoon. Upon their unexpected break-up, however, she faces the uncomfortable truth that Dae-yoon was already in a long term relationship with some other girl. What did I mean to him? I want to find out his true feelings.

Soon after getting a new phone, a woman notices strange things starting to happen. When she investigates, she discovers that everyone who has had her phone number before her has died suddenly and mysteriously.