The series starred Kunihiko Mitamura with Yoko Minamino, Yūji Kishimoto, and Bengal as the team of secret agents working under the leadership of Kōtarō Satomi.
The eighth Tokugawa shōgun, Yoshimune, had officially had 17 families of oniwaban, his private ninja guards.
The series begins some months after Yoshimune's death as his fourth son Hitotsubashi Munetada (Satomi) brings the group back together.
Among them were Hiroshi Arikawa, Yoriko Douguchi, Saiko Isshiki, Shun Ōide, Mitsutaka Tachikawa, Naoya Uchida, Kenichi Endō, Seizō Fukumoto, Ken Nishida, Shun'ya Wazaki, Yuki Ninagawa, Kenta Satoi, Hiroshi Miyauchi, Kei Taguchi, Susumu Kurobe, Seiichirō Kameishi, Shinsuke Mikimoto, Tsutomu Isobe, and Gorō Mutsumi.
The series originally appeared in the Saturday 8:00–8:54 p.m. prime-time slot on the TV Asahi network.