"The Complex-Prologue" is a spin-off of horror movie "The Complex". A young boy named Minoru becomes involved in a mysterious phenomenon and horror experience.

Hisui Jozuka can “see” the culprits with her clairvoyance, but this won’t hold up as evidence. Just how will she solve complex cases? “I have the ability to know the truth, but why am I so useless?” Hisui, with her green eyes, is in anguish. As a medium, she can trace down culprits with her special gift of clairvoyance, but this won’t hold up as evidence. What must she do to get the police to investigate? Will they manage to catch the perpetrator? This is a unique detective drama series that features a psychic detective who goes face to face with criminals.

Against the landscape of Japan’s historic Shikoku pilgrimage, Shinji is a grief-stricken alcoholic whose only companionship comes through conversations with the ghost of his late wife Haruka. As his daughter Kyoko struggles to keep their fractured home together, Shinji drifts further into delusion, finding his sole tether to reality at a bar run by Mari. After his self-destructive behavior drives Haruka’s ghost away, father and daughter set out in search of her, confronting grief, memory, and the possibility of spiritual reconciliation.

On her way to Chikura to live with her son, Yasue Amami gets off at the Tateyama train station. She wants to see her old house. The a new owner, Mitsuko Kawahara, intends to demolish the place and replace it with a modern new house. With Mitsuko's permission, Yasue enters her old home. Her family had rented it during World War II to escape air raids over the city, and they stayed on for a few years after the war. As Yasue visits the grounds, memories come flooding back.