Three different coming-of-age stories from the point of view of the protagonists about how they deal with their realities in high school at the end of their teenage period as Gen Z.

A sexual scandal between a math teacher and a student in a prestigious high school ended in tragedy. 4 years later they meet again, now as adults, to reveal the corruptions in school and to regain one's reputation as a teacher.

An ordinary taxi driver becomes entangled with a customer that turns out to be a serial killer.

No matter how old you get, life is just a 'dark history generator'?

Hae-su works at a factory on the outskirts of Seoul. Returning home from work, she makes a phone call that goes to voicemail; nearing her residence, another phone call comes in, but she doesn't pick up. Inside the house is her mother's body—she died from mysterious circumstances. A knock on the door goes unanswered, but when a plainclothes police officer arrives, Hae-su lets him in. An exchange of documents, uncertain glances. With Hae-su and her tempermental brother the only attendants at her mother's funeral, there are more questions than answers.