Seung-hyeon, a construction team leader with PTSD, is ordered to inspect Dohak Station, where a fatal accident halted work years ago. Inside the eerie, abandoned tunnels, he and Joo-young encounter two mysterious workers and become lost while trying to escape. Meanwhile, a CEO and a shaman perform a ritual to resume construction, but enraged spirits retaliate, plunging everyone into chaos.

Under the name of family, we complete our own modernity. 4 talented directors unfold 4 different portraits about family, the most heart-warming, yet the most heart-aching word in the Modern era.

Tae-jeo, a correctional officer with 15 years of experience, learns about the death of an inmate's mother during a night shift. On that winter night, she visits the funeral home and unexpectedly meets the inmate's daughter, Jun-young. Their encounter brings warmth to both their lives, and Tae-jeo hopes Jun-young understands: “Every decision you make shapes who you become."

Jiwan quits her job and start working on a script to become a film director. She has worked on her script for many years but making it into a film seems almost impossible. As she runs around the field in frustration, shee sees a shining rainbow in a puddle and finds hope to work on a new project. She writes to a new script of the title 'Rainbow' that is about the fantastic band playing by 7 color.

During the late 1980s, two detectives in a South Korean province attempt to solve the nation's first series of rape-and-murder cases.