Between the first TV series and Gemini of the Meteor, the Contractor Hei and the Doll Yin have left Tokyo and are on the run from the Syndicate. Pursued across Europe by other Contractors, Hei begins to notice strange changes in Yin's behaviour that no one around them can yet explain. This four-episode OVA bridges the two TV seasons and sets up the backstory the second series only hints at.