From February 3, 2017 to March 25, 2017 it aired on cable channel tvN every Friday and Saturday at 20:00 (KST).

[2][3][4] The story revolves around Yoo So-joon (Lee Je-hoon), a CEO of a real estate company, who has the ability to travel through time via a subway; and his wife, Song Ma-rin (Shin Min-a), who works as an amateur photographer.

So-joon foresees his future-self die so he decides to marry Ma-rin in order to avoid that fate.

The first script-reading was held on August 29, 2016 in Sangam-dong, Seoul, South Korea and filming began on September 5, 2016.

This series aired on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC and EBS).