"Chaos;Child Silent Sky" is a psychological thriller anime that expands on the events of the "Chaos;Child" visual novel and anime series. Set in Shibuya, Tokyo, six years after the "Shibuya Earthquake," the story revolves around a series of mysterious murders that mirror the "New Generation Madness" incidents from the past. The protagonist, Takuru Miyashiro, is a high school student and the president of the school newspaper club. He becomes deeply involved in investigating these murders after discovering a connection between the victims and a phenomenon known as the "Gigalomaniacs," individuals with the ability to manifest their delusions into reality.

Takuru is joined by his childhood friend, Serika Onoe, who possesses her own mysterious abilities, and other members of the newspaper club, including Nono Kurusu, Hinae Arimura, and Uki Yamazoe. As the investigation progresses, Takuru uncovers dark secrets about the true nature of the Gigalomaniacs and their connection to the Shibuya Earthquake. The narrative delves into themes of trauma, identity, and the blurred line between reality and delusion, as Takuru confronts his own past and the psychological scars left by the earthquake.

The story intensifies as Takuru and his friends face off against a shadowy organization known as the Committee, which seeks to exploit the Gigalomaniacs for their own purposes. The series builds tension through its intricate plot, exploring the psychological toll of the characters' abilities and the moral dilemmas they face. The climax reveals the true extent of the Committee's plans and the devastating consequences of their actions, leading to a resolution that ties together the personal struggles of the characters with the larger mystery of the New Generation Madness.

"Chaos;Child Silent Sky" maintains a focus on its central mystery while developing its characters through their interactions and personal growth. The series balances its dark, suspenseful tone with moments of introspection, creating a narrative that is both engaging and thought-provoking. The interplay between the characters' psychological states and the unfolding plot drives the story forward, culminating in a conclusion that addresses the lingering questions raised throughout the series.