After causing a major incident, police officer Daigo Agawa takes his wife and daughter to live in the remote mountain village of Kuge. It seems the perfect place to recover from the ordeal, despite the mysterious disappearance of a previous officer posted there. One day, the body of an old woman is found on the mountain. The Goto family says she was attacked by a bear, but Daigo notices a human bite mark. It soon becomes clear that not all is as it seems in the village.

A fourth-grader, Aoyama-kun, investigates the mysterious reason behind the sudden appearance of penguins in his village, which is somehow related to a power from a young woman working at a dental clinic.

A Japanese tabloid reporter tired of working simply as a celebrity scandals writer accepts a new challenge when he is assigned to make contact with a former Yakuza informant.

Karina Chimoto, who works at an advertising agency, is put in charge of a launch event for an adult ballet-wear brand, but when the scheduled dancer becomes unavailable, she is suddenly forced to step in as a substitute because of her prior ballet experience. On that very day, shaken by this unexpected accident, Karina faces yet another shock: Yumi Futagi, whom she met in ballet class at age 6 and who had been her closest friend for 20 years, suddenly declares their friendship over. Yumi has fulfilled her childhood dream of becoming a professional ballerina. Unable to believe Yumi's declaration, Karina visits her home and the ballet company where she works, only to be flatly refused even a meeting. Confused, Karina wanders into a ramen shop and is stunned to find Yumi working there. Stricken, Karina decides to enroll as a student at the ballet school where Yumi teaches, and even starts showing up at "Tameguchi," the ramen shop where Yumi works part-time. She tries everything she can to get Yumi to reveal the reason behind her sudden rejection, but will their friendship ever be restored?

Yumiko Haruno works as a waitress at a cafe that has been around for a long time. She spends her days aimlessly and without a dream for her future. On an ordinary day at her job, Yumiko notices middle aged man Ichirou Haga looking intently at shunga (Japanese erotic paintings that were popular during the Edo period). He suddenly talks to her and asks her what shunga is to her. Yumiko becomes interested in the eccentric shunga researcher and he invites her to visit his home to learn more. After his wife passed away, Ichirou has lived a reclusive life and concentrated solely on his study of shunga. Yumiko visits his home and begins to take shunga lessons from him.

A lonely lawyer falls for a murderer in this Japan-Korea drama. Mamono explores dark themes of desire, infidelity and domestic violence through visually striking scenes of people's twisted lives.