At sixteen, Princess Anmitsu, tomboy and fiercely independent, lacks a love interest and worries her parents. Despite their concerns, she leaves the castle and immerses herself in the lives of commoners. While exploring, she befriends a group of children who survive by pick‑pocketing, and among them she meets Senbei, the charming leader of the troupe. As their bond deepens, Anmitsu learns that the children plan to steal treasures from her own castle. Now she must thwart the scheme while keeping her royal identity hidden.