"Uzumaki" is a horror manga series set in the fictional town of Kurouzu-cho, a secluded coastal community plagued by a mysterious curse centered around spirals. The narrative unfolds through the experiences of high school students Kirie Goshima and her boyfriend, Shuichi Saito, as they witness the town's descent into madness. The curse manifests in increasingly bizarre and grotesque ways, affecting both the environment and the townspeople, who become obsessed with spiral patterns to the point of self-destruction.

The story begins with Shuichi's father developing an unnatural fixation on spirals, collecting objects with spiral shapes and eventually transforming into a grotesque, snail-like creature. This incident marks the first of many strange occurrences tied to the spiral curse. As the curse spreads, the townspeople exhibit erratic behavior, from a woman who contorts her body into a spiral to a man who becomes obsessed with creating pottery with spiral designs, leading to his demise. The curse also affects the natural world, with whirlwinds, spiral-shaped clouds, and even the town's architecture becoming distorted.

Kirie and Shuichi attempt to uncover the source of the curse and escape the town, but their efforts are thwarted by the pervasive influence of the spirals. The curse intensifies, leading to mass hysteria and the transformation of the townspeople into inhuman forms. Shuichi's mother, for instance, becomes consumed by her fear of spirals, leading to her death, while other residents are driven to madness or mutation. The narrative escalates as the town itself begins to collapse, with buildings twisting into spiral shapes and the landscape becoming increasingly surreal.

The final arc reveals that the spiral curse is an ancient, malevolent force tied to the town's history. Kirie and Shuichi confront the curse in a climactic sequence, but their attempts to break free are ultimately futile. The story concludes with the town being consumed entirely by the spiral, leaving its fate ambiguous and emphasizing the inescapable nature of the curse.

Throughout the series, the spiral motif serves as a central symbol, representing both the inevitability of the curse and the cyclical nature of destruction. The characters, particularly Kirie and Shuichi, are portrayed as ordinary individuals caught in an extraordinary and horrifying situation, their struggles highlighting the themes of powerlessness and inevitability. The narrative's structure is episodic, with each chapter introducing new manifestations of the curse while advancing the overarching plot. The series blends psychological horror with body horror, creating a sense of dread that builds steadily as the curse's influence grows.