Yun Hae Jun is the youngest anchor to ever work at his broadcasting station. He is calm and straightforward as a journalist and kind in his personal life. On the other hand, Baek Yun Yeong dreamed of becoming a writer but wound up working at a publishing company.
The two somehow travel back in time to the year 1987. There, Yun Hae Jun tries to find the truth behind a serial murder case, while Baek Yun Yeong attempts to prevent her parents from marrying. They soon realize that their objectives are connected.
Hae-jun, a man with a cynical demeanor, works as an anchor at a news station. His unique personality can be attributed to his mother's abandonment when he was young and his grandfather's constant criticism, considering him the only flaw in their otherwise flawless family. Despite his grandfather's ignorance, Hae-jun rises to success in his career as a righteous reporter. However, his world is turned upside down when he unexpectedly comes across a time machine, something he never thought could exist. Yoon-young leads an ordinary life as an editor at a publishing company until she discovers her mother's lifeless body by a riverside. One day, her life takes a drastic turn when she gets struck by an invisible car near the same riverside and wakes up in the year 1987. The two gradually come to understand that the recurrent coincidences between them carry a deeper significance beyond mere chance.