Sub-Dial

Sinopsis

Gang-un, who grew up in an orphanage, has dedicated himself to serving William, the head of an organization, becoming his trusted right-hand man. William entrusts Gang-un with the care of his son, Isaac, upon Isaac's return from abroad. Isaac, however, challenges Gang-un's loyalty to his father, questioning why Gang-un remains devoted to an older man when a younger person like Isaac himself could be more appealing.