Hiroya Matsumoto, hoping to become a great employee as his late father, has just been hired at Raito (Right) Trading Company. Little does he know that he has been recruited for a very mysterious department within the company - the Special Duty Combat Unit, known as SHINESMAN. Their purpose, to fight the terrible (often times hilarious) alien forces that threaten the earth. Like most corporate employees, Matsumoto still has meetings to attend and deadlines to meet. But when the Shinesman rage war against the alien race from Planet Voice, led by their Prince Sasaki, Matsumoto and his co-workers don their office-coloured comat Pro-suits and become: Shinesman Red, Sepia, Salmon Pink, Grey, and Moss Green. If you thought you'd seen it all in Power Rangers, Kamen Rider, or even Dynaman, wait until you take a look at the zaney but corporate world of SHINESMAN! (Source: Anime Works DVD)

Tachibana Kaimu used surnames of his favorite voice actors for the characters of his manga Tokumu Sentai Shinesman. These same voice actors ended up voicing the characters for the anime adaptation.