The anime is a parody of the famous Super Sentai series of tokusatsu programs. As such, the plot is fairly thin and formulaic, but deliberately so. Essentially, the king of the alien planet Voice has declared war on the planet Earth. However, their war takes a most peculiar form — a war of Big Business. The king's plan is to send Prince Sasaki and his strategist, Seki, to Earth and form a corporation large enough to rule the world. They plan on achieving this by funding the television series "Greatman" and its marketing. However, Earth has its own team of heroes ready to fight back — The Special Duty Combat Unit Shinesman! Created by the Right Trading Company, the Shinesman team is inspired by the superhero television shows of the day, though their costume colors and weapons are distinctly absurd. The team, consisting of Shinesman Red, Shinesman Sepia, Shinesman Moss Green, Shinesman Salmon Pink, and Shinesman Gray, uses such weapons as "Business Card Cutters" and "Tie Clip Bombs" to combat their alien foes. (from Wiki)