A middle school girl named Kuina sees the world as a filthy, restrictive, and absurd place, carrying a hatred she cannot express. Every morning, her friend Moa stands on the school rooftop with a megaphone, shouting warnings that malicious extraterrestrials are conducting brainwashing attacks on the human race. Moa is known as a compulsive liar, and her delusions are dismissed by everyone around her. However, when the despair of both girls reaches its breaking point, Moas fantasies suddenly become reality, dragging Kuina into a desperate battle against the alien threat she had always warned about.

The setting is a contemporary world described as polluted and stagnant, where the protagonists ordinary school life is the backdrop for an invasion that only they seem able to perceive. The conflict is a revolution for girls who feel trapped by their reality, blending psychological turmoil with supernatural catastrophe. The narrative is framed as a fleeting and beautiful tale of destiny, centered on themes of purity in a corrupted world and the opening of a new mythology that can change despair.

The main characters include Kuina, the protagonist burdened by a bleak worldview and suppressed rage, and the delusional Moa, whose fabricated warnings become the key to a genuine apocalypse. The series also features a character named Rize, who becomes involved in a fierce battle regarding the malicious space aliens at the school.

One notable narrative arc involves the fight surrounding the malicious extraterrestrial presence at the school, which forces the characters to confront their own resolve and the closed-off nature of Moas psyche. The story is heavily influenced by the Sekai-kei genre of the 2000s, where the emotional states of the teenage protagonists are directly linked to the fate of the world, exploring the poignant delusion that saving the world will automatically save themselves.