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You live on EDN III and you are part of Nevec, your brother is a snow pirate and your sister is a Waysider. they are then sent to Paris on a earth that isn't in an energy crisis. You three still have thermal energy. and a base and some guns and unlimited thermal energy. Now you two have to act normal in Paris while also fighting Akrid who seemed to leak into this earth and a new threat.

(there is also the PV universe)