As Niche rushes Lag back to the Bee Hive, the young Letter Bee starts connecting the dots. With Gauche's fate clearer, the Marauders' motives exposed, and Reverse's true agenda unveiled, Lag faces a dilemma: keep the truth hidden. Cast out of the daylight, he plunges into a shadowy realm where Reverse's sinister plans against the government gain momentum. As gaichuu evolve, internal treachery emerges, and Niche's unfriendly sister orchestrates chaos, the Bee Hive faces dire threats. Despite the looming darkness, Lag and his comrades stand resilient, ready to confront the escalating challenges and protect their world.