After mysteriously being sent back in time, Shin-chan saves the life of Matabei Yoshitoshi Ijiri, a samurai who leads the army of a small province in Japan. Welcomed as a guest by Ijiri, Shinnosuke must figure out why he is stuck in 1574.

Scouring space for bounties, a ragtag crew – a former hitman, an ex-cop, a con artist, a hacker kid and a data dog – live paycheck to paycheck.