Yoroi Takeshi is a carefree and somewhat naïve youth, who works as an assistant to the bumbling detective wannabe Kuruma Jo (who frequently proclaims himself the heir apparent to the title of Greatest Detective “Sherlock Holmes”). From their rundown and shabby office, they run a humble if not failing private investigation service. The spunky and cute Nanba Teru (who’s father owns the building when Jo and Takeshi reside in) frequently interferes in their affairs by threatening eviction (Jo is continually months behind in back rent). Since they rarely get any clients, they must resort to eavesdropping and spying on the Secret International Police Department headquarters, located in the building across from theirs in order to get their assignments. Unbeknownst to Jo and Teru, Takeshi has a deep secret. Not only is Takeshi the son of the International Police Department Chief but in times of peril and danger, mild-mannered Takeshi uses his trusty Poly-Met (Polymer Helmet) to transform into the Superhero “Hurricane” Polymer, a red suited masked man with incredible fighting abilities and superhuman strength. The only one who knows Takeshi’s secret is his lazy Saint Bernard, Daisaku, who always likes to provide cutting commentary to the audience (using his inner voice). Together Jo and Takeshi (as Polymer) confront and battle a myriad of evil organizations, criminal gangs, mutants and monsters as they fight crime in the future city of Washinkyo (Washington/Tokyo).

Lucifer has been awoken from his eternal slumber by the spirits of Eris, Abel and Poseidon. He has come to kill Athena and fulfill his heart's burning desire: becoming the strongest of all the gods.

The Layzner OVA serves as an alternative version of the TV series. The first episode, titled "Eiji 1996", recaps the first part of the series (episodes 01-24). The second episode ("Le Caine 1999") takes place after a time skip, and contains episodes 26 through 37 (episode 25 of the TV series, being a recap itself, is skipped here). The final episode, "Seal 2000", is an expanded version of the final episode of the TV series (38) and features new animation and a longer epilogue.

A quiet, polite, lonely immortal esper about which little is known, he is called "Locke the Superman", but often denies being so. It is not known where or when he was born, and if asked, Locke will say he does not remember. It is entirely possible this is true. However, when asked by Cornelia Prim in "Millennium of the Witch" which star he was from, Locke replied "Toa." He has appeared at various times throughout the history of the galaxy, either as a direct influence, an indirect influence, or a simple observer. Using his esper abilities, Locke can learn and do most things more quickly than a normal human. His power also allows him to remain eternally young, or even turn himself into a child again to be adopted by kind-hearted families. It is speculated he remains youthful as an excuse not to take responsibility for whatever cause he is approached for, since no one expects youths to have such responsibilities.