Haruta Hotaka, whose dream of becoming a film director was shattered, now spends his days in despair. One day, he's invited to his younger sister's wedding and returns to his hometown for the first time in 12 years. As he tries to escape the discomfort of being back, he looks up at the sky—only to see mysterious shapes flying in: circles, triangles, and squares... Suddenly, one of them lands and begins a massacre right before their eyes, ignoring the stunned and frozen Haruta and the others. See the shape and you die!?