Jung-in follows her father’s footsteps to become a renowned reporter. Everything was going well for her and her family until the day after her birthday in 2019. Something from the past changed, which changes her whole life. Her father was assassinated back in 2015 presidential election, her house turned into a rural apartment, and she finds herself as a journalist in a small web news company. Nobody listened to her and assumed she had a mental illness. Somehow an accident happens, and through a telephone, she contacts a man named Jin Woo, who claimed to be living in 2015. Through the phone, she collaborates with him to save her father who is about to be assassinated in 2015.
