This suspenseful prequel to the horror film Ju-on follows a young man who encounters an eerie mystery while cycling past a seemingly abandoned building. The ordinary scene turns sinister when he hears a ringing cell phone echo from inside. This discovery triggers a series of unsettling events, revealing a dark history within the building's walls. As he investigates, he uncovers disturbing truths about the building and its past residents, challenging his perception of reality. With a haunting atmosphere and compelling storytelling, the film delivers a gripping journey into the unknown.