Joo Joong Won (So Ji-sub) is a rapacious CEO who is only concerned about money. His secretary, Tae Gong Sil (Kong Hyo-jin) is a dark and reticent insomniac who is burdened with the ability to see ghosts. Joong Won and Gong Sil are an unlikely duo in every regard, but they share one thing in common: they are both intensely crippled personalities that need a lot of help. Can the money hungry Joong Won recognize priorities beyond the dollar sign, and can the lonely Gong Sil ever live a life without fear? Together, strange as it may be, it’s possible in this unique dance between yin and yang.