In the year 2020, when Covid-19 is rapidly spreading around the world, chaos ensues and people's daily lives are completely upended. A virus outbreak suddenly occurs at the prime minister's office in Japan. This leads to the prime minister's sudden death. The Japanese government then puts in place an unprecedented plan, which is to bring back the greatest leaders from Japan's past through AI holograms and form a super cabinet with them. These famous individuals include Ieyasu Tokugawa (Mansai Nomura), Ryoma Sakamoto, Nobunaga Oda, and Hideyoshi Toyotomi. People are stunned and at the same time go crazy over the endless execution of policies by this new legendary cabinet. Risa Nishimura (Minami Hamabe) wants to become an announcer and currently works as a TV reporter for a broadcasting station. She approaches a government spokesperson, Ryoma Sakamoto (Eiji Akaso), for an exclusive scoop. Due to an unexpected case, she realizes that something is going on behind this cabinet.
Unfortunately the movie What if Tokugawa Ieyasu Becomes Prime Minister is not yet available on HBO Max.
| Directing | Hideki Takeuchi | Director |
| Production | Yoshihiro Kubota | Producer |
| Writing | Yuichi Tokunaga | Screenplay |
| Production | Minami Ichikawa | Production Director |
| Production | Hisashi Usui | Executive Producer |
| Production | Daisuke Katahira | Line Producer |
| Production | Maki Hiwara | Co-Executive Producer |
| Production | Yurika Koike | Producer |
