A young girl named Mija risks everything to prevent a powerful, multi-national company from kidnapping her best friend - a massive animal named Okja.

Kyung-chul is a dangerous psychopath who kills for pleasure. Soo-hyeon, a top-secret agent, decides to track down the murderer himself. He promises himself that he will do everything in his power to take vengeance against the killer, even if it means that he must become a monster himself.

Seon-hwa is a new student at an elite medical school, and she is initiated into a dissection class headed by Dr. Han along with five other students, including her boyfriend Ki-beom. After the first class the students all start to share the same nightmare involving a one-eyed surgeon, and one by one they start to be murdered, the victims being discovered with their hearts removed. Seon-hwa and Ki-beom are convinced that these events are related to a beautiful cadaver with a rose tattoo on her breast, and they begin an investigation to uncover her identity.

A teenage girl is captured by a giant mutated squid-like creature that appears from Seoul's Han River after toxic waste was dumped in it, prompting her family into a frantic search for her.

A police officer confronts his teenage daughter while they are on holiday together after learning she is moonlighting as a prostitute with the help of a friend.