When an American is murdered in a Japanese inn, Tokyo police detective Munesue follows the trail of the killer to New York. There he is joined by a New York City detective named Shuftan and together they sort out the crime.
Denjimen are warriors who fight against the Vader Clan, a clan that tries to pollute the Earth with sludge. Denjimen fight using the Super Science of the Denji people. This was the first Sentai series to introduce transforming robots.