8 . ▁Writ ten ▁by ▁Rob ▁Grant ▁and ▁Doug ▁N aylor , ▁and ▁directed ▁by ▁Ed ▁By e , ▁the ▁plot ▁involves ▁the ▁Red ▁D war f ▁crew ▁trav elling ▁to ▁a ▁parallel ▁universe ▁where ▁they ▁meet ▁alternative ▁versions ▁of ▁themselves . ▁This ▁marked ▁the ▁final ▁appearance ▁of ▁Norman ▁Lov ett ▁as ▁Hol ly , ▁although ▁he ▁would ▁return ▁years ▁later ▁at ▁the ▁end ▁of ▁Series ▁VII ▁and ▁then ▁for ▁the ▁whole ▁of ▁Series ▁VIII . ▁The ▁episode ▁was ▁re - master ed , ▁along ▁with ▁the ▁rest ▁of ▁the ▁first ▁three ▁series , ▁in ▁ 1 9 9 8 . ▁ ▁Plot ▁Hol ly ▁invent s ▁a ▁new ▁drive ▁system ▁called ▁the ▁" H olly ▁Hop ▁Drive ", ▁declaring ▁that ▁it ▁can ▁theoret ically ▁get ▁Red ▁D war f ▁back ▁to ▁Earth ▁in ▁an ▁instant . ▁When ▁Arnold ▁R immer , ▁Dave ▁L ister ▁and ▁Cat ▁decide ▁to ▁use ▁the ▁new ▁system , ▁it ▁trans ports ▁the ▁ship ▁into ▁a ▁parallel ▁universe , ▁and ▁in ▁proxim ity ▁of ▁a ▁parallel ▁version ▁of ▁Red ▁D war f . ▁On board , ▁R immer , ▁L ister ▁and ▁Hol ly ▁encounter ▁their ▁female ▁counter parts ▁– ▁Ar l ene ▁R immer ▁( S uz anne ▁Bert ish ), ▁Deb ▁L ister ▁( Ang ela ▁Bruce ) ▁and ▁H illy ▁( H att ie ▁Hay ridge ) ▁– ▁discover ing ▁that ▁in ▁this ▁universe , ▁women ▁are ▁the ▁master s ▁and ▁superior ▁gender , ▁while ▁men ▁fought ▁for ▁equal ▁rights . ▁Cat , ▁expecting ▁to