Residents of a high-rise building fight for survival when a deadly disease breaks out and turns the infected into blood-lusting zombies.

A psychological thriller that delves into the reality of power. It follows the story of three men and women whose lives are destroyed by a tragic accident as they become a team that uncovers corruption and fights against people with power.

Seo Ji Ahn, a former rich girl, was forced to be her family's breadwinner after her father's bankruptcy. She is now a contractual employee and living her life with restrained emotion. The drama chronicles her struggles to find new meaning and happiness in life.