Saki, an up‑and‑coming idol, holds an autograph session that turns out to be deserted. Her hapless editor, unsure how to deal with the situation, thinks threatening a nearby elementary‑school child might solve the problem. When that plan fails, he resorts to arranging an autograph showdown between Saki and the psychotic idol wannabe, Bururu. Meanwhile, a reckless teenager’s bungled attempt to summon Satan forces him and his friends to try to send the devil back to the underworld, but their efforts only make the demon more infuriated. Will they emerge from the ordeal unscathed?