The film tells the riveting story of a complex murder case, parallelly investigated by a police officer and an investigative journalist in their own way, who eventually cross paths to unravel secrets they never imagined.
A young girl lives with her mother in an isolated mountain cabin. Mother dies, the girl also has a child. No father is present. A friendship is formed with another woman but things start to become twisted. Paranoia and delusions follow
高中女生五岛桐绘(初音映莉子 饰)生活在一个安宁祥和的小镇——黑涡镇,但是,这里的气氛却逐渐变得诡异起来。父亲敏夫(大杉漣 饰)着迷于带有螺旋图纹的东西,男友齐藤秀一(フィーファン 饰)则对漩涡图案甚为恐惧;同班同学的样子越变越怪,最终变成了湿漉漉的蜗牛;母亲雪枝(高橋惠子 饰)恐惧螺旋图案,不惜毁坏自己的身体……