The world is enveloped in a dense mist, casting an eerie atmosphere that transforms ordinary individuals into mindless creatures resembling zombies. The origin and remedy of this phenomenon remain a mystery, leaving people to face the terrifying unknown. In a desperate bid for survival, Hayeon, a gifted biologist, embarks on a treacherous journey towards the extravagant capital city reserved for the privileged few. Amidst the harsh realities of this dystopian landscape, Hayeon discovers a startling revelation: his infatuation, Myung Woon, appears to be intricately entwined with the enigmatic virus that has plagued their existence. As the pieces of this puzzle slowly come together, a tale of intrigue and danger unfolds, setting the stage for a gripping narrative of survival and love in the face of imminent catastrophe.