Sakon Tachibana, a dark‑haired bishounen puppeteer, partners with Ukon, his favorite puppet and best friend. Ukon is a child‑doll puppet crafted in the early Meiji era by the renowned female dollmaker Unosuke. Sakon is the sole grandson of Saemon Tachibana, a national treasure of Japan celebrated for his mastery of Bunraku puppetry. Together, they investigate and solve murders.