Dolmen takes place in a sci-fi universe where humanity has colonised several star systems using space travel technology and genetic manipulation to adapt to the conditions. The Reviam system is far from the main inhabited area of the galaxy, but drew the attention of Zoan Corp. for emitting radiation different from other systems, suggesting the existence of other universes. There is only one planet in this system, which was named Revion Prime.
Before the events taking place, there was no evidence of the existence of other dimensions. The scientific and military interest behind this discovery could destabilize the existing political balance but, more than that, research on Revion Prime also revealed the existence of an alien species called Vahani; who’s job it appears is to roam the universes helping other species to evolve. Their interests are obscure and it remains to be seen if the creation of xeno-species could have had any influence from them. The player need to discover the secrets of Revion Prime and the Dolmen crystals.