In a small Japanese town, a young woman discovers her boyfriend's father fixated on spirals, leading to a bizarre and terrifying descent into madness, culminating in a gruesome and surreal transformation. As the town's inhabitants become increasingly obsessed with spirals, they begin to mutate into bizarre forms, with one student transforming into a snail and another's hair taking on a Medusa-like appearance.

Spiral
The tranquil streets of a Japanese town are suddenly consumed by an inexplicable fascination with spirals, but as the obsession deepens, the residents' descent into madness and terror becomes increasingly apparent.