3,000 years ago, the Vader Clan, led by Queen Hedrian, devastated the planet Denji. Denji Land, an island from Denji, landed on Earth. In modern times, the computer of Denji Land awoke the Denji Dog IC when it detected the Vader Clan approaching Earth. IC found five young people (who may or may not be descendants of the Denji people) to become the Denjimen in order to defend Earth, the Vader Clan's next target.
