Rabbits dwell in towns on the higher floors, from levels 1 to 13, of a towering country. In contrast, the distressed wolves reside in the lower strata, with each floor being progressively more hazardous and inferior for habitation. To ascend, an individual necessitates a key to verify their access, while access is unregulated for individuals moving downwards. Bell, a rabbit, performs the duty of seizing wolves each day, and she relentlessly annihilates any infiltrators. Amidst this, a wolf comes alongside her...?!