In a town's third district inhabited solely by male cats, Rikuo, a diminutive feline, has long reigned as the dominant leader. Despite the aging population leading to a dwindling community, Rikuo has steadfastly defended his territory against intruders. Enter Toraji, a cat rescued by Rikuo in his infancy, now poised to challenge for the coveted alpha role upon reaching maturity. Can Toraji, newly an adult, usurp Rikuo's reign? Meanwhile, the narrative delves into the plight of Kuro, a male cat grappling with a grave predicament, and Ao, an oblivious house cat navigating unfamiliar territory regarding his own physical needs and challenges.