When a two-month-old kitten named Chibi-neko is abandoned, she crosses paths with Tokio, an 18-year-old who rescues her despite his mother's cat allergy and fear. Concerned about Tokio's reclusive behavior after his academic setback, his mother allows him to keep the kitten. Chibi-neko, smitten with Tokio, imagines herself as a tiny human with a human voice, convinced that humans were once kittens like her. Encountering a stray cat, Chibi-neko learns of Cottonland, a fabled paradise where wishes are granted.