Times

Lee Jin-woo (Lee Seo-jin) and Seo Jung-in (Lee Joo-young) are both reporters, though the former lives in 2015 and the latter in 2020. One day, they discover that they can contact each other through a phone call. They start working together in order to prevent the murder of Jung-in's father Seo Gi-tae (Kim Yeong-cheol), the President of South Korea.