A soldier and his team battle hordes of post-apocalyptic zombies in the wastelands of the Korean Peninsula.

Gurus in the late Goryeo dynasty try to obtain a fabled, holy sword, and humans in 2022 hunt down an alien prisoner that is locked in a human's body. The two parties cross paths when a time-traveling portal opens up.

Ju-young is a young woman with a hearing impediment who decides to investigate her sister's inexplicable disappearance, last seen in her apartment. Feeling more and more cornered, Ju-young begins to hear strange sounds and sense an evil presence in the apartment.

Ean has a critical mission to return to the future to save everyone. However, she becomes trapped in the distant past while trying to prevent the escape of alien prisoners who are locked up in the bodies of humans. Meanwhile, Muruk, who helps Ean escape various predicaments, is unnerved when he begins sensing the presence of a strange being in his body. Traveling through the centuries, they are trying to prevent the explosion of the haava.

Following a brutal murder case, the police are baffled to find out that the assailant, whose body was found on the scene with the victim, had already been dead for three months. Meanwhile, journalist Jin-hee sets up a live interview with an anonymous caller claiming he is the true killer behind the mysterious murder. When the man announces three more murders will occur in the hands of the undead, Jin-hee must face the sinister forces beyond understanding.

When her son gets critically injured in a car accident, a mother discovers that there's more to his relationship with his friend than she had thought.