On a morning that was bigger than a splash, high school girl Yukari Yamamoto (played by Marika Ito) was in a hurry to wash up and prepare, but someone left a mark similar to "F" on the name tag in front of her house. She was ordered by her mother to erase the mark, and in addition to taking her father's car to take her brother to kindergarten, she missed the agreement to go to school with her friend Naho Matsubara. Unexpectedly, the bus Naho was riding in was in a serious car accident, and his friend unfortunately died in a tragic accident. After that, Yukari was haunted by mysterious symbols, and the figure of her deceased friend appeared in front of her from time to time, causing her to almost collapse her spirit. The strange and strange events intensify, and the Yamamoto family, which was already shrouded in darkness, is on the verge of shattering, and the secrets in Yukari's heart will also quietly emerge...... The film is based on the short story "F" by horror novel writer Koji Suzuki.
