Aya Asagiri grapples with suicidal thoughts daily due to relentless bullying at school and physical abuse from her brother. After encountering a mysterious website, Magical Girl Site, offering magical powers, she receives a magical gun and inadvertently uses it to dispatch her tormentors. Struggling with the consequences, she is aided by Tsuyuno Yatsumura, a fellow magical girl with unique powers. Together, they navigate a world of magical battles and intrigue, seeking answers about the enigmatic website and the looming 'Tempest' catastrophe.