In a tranquil teahouse, Fuu Kasumi, a clumsy waitress, accidentally provokes a group of samurai. To her rescue comes Mugen, a reckless fighter with breakdancing-like moves. A clash with the composed ronin Jin ensues, leading to chaos and a fateful encounter with a local magistrate's son. Facing execution for their actions, Fuu intervenes and hires Mugen and Jin as her protectors. With a quest to find a sunflower-scented samurai, the trio embarks on a tumultuous journey through an alternate Edo Period Japan, blending action, humor, and hip-hop-infused sword fights.