Jung In writes an article at her office at DBS as usual, but suddenly she wakes up at the desk of an office she has never been to before. When she runs back to DBS, everyone is acting strange and tells her that she doesn’t work for DBS. She then realizes that her father, Seo Ki Tae is dead. She is confused as she just celebrated her birthday with him. After a year later, she receives a phone call from Jin Woo who lives in 2015. (Source; Viu)