A brand-new cat owner with no experience living with pets, quiet office worker Riko uses lessons drawn from video games to guide her in cat care. Musubi, her cute new companion, tries to understand Riko's behavior through a cat's worldview. Enjoying their time together, Riko learns more about cohabitating with a cat, as lessons in grooming, play, and personal space continue to be learned. "Leveling up" in skills, surprises, and adventures extends to real life, as Riko discovers what it's like living with a cat!