▁Du ane ▁D ib ble y ▁from ▁" Back ▁to ▁Re ality " ▁and ▁A ce ▁R immer ▁from ▁" Dim ension ▁J ump ". ▁ ▁Plot ▁Star bug ▁finds ▁itself ▁being ▁h ounded ▁by ▁a ▁computer - control led ▁Space ▁Corps ▁enfor cement ▁vessel ▁that ▁soon ▁sc ans ▁the ▁ship . ▁Dave ▁L ister , ▁Arnold ▁R immer , ▁K ry ten ▁and ▁Cat ▁find ▁themselves ▁charged ▁with ▁lo oting ▁der el ict ▁spaces hips ▁and ▁sent enced ▁to ▁death ▁under ▁front ier ▁law . ▁The ▁crew ▁escape , ▁but ▁crash - land ▁on ▁a ▁G EL F ▁moon . ▁Need ing ▁parts ▁to ▁repair ▁the ▁ship , ▁they ▁search ▁for ▁a ▁G EL F ▁tribe ▁who ▁might ▁be ▁willing ▁to ▁trade ▁with ▁them . ▁The ▁group ▁find ▁a ▁tribe , ▁and ▁begin ▁negoti ations , ▁only ▁for ▁L ister ▁to ▁discover ▁he ▁must ▁marry ▁the ▁daughter ▁of ▁the ▁tribe ' s ▁chief ▁in ▁exchange ▁for ▁the ▁unit . ▁Sc ared ▁of ▁his ▁wife ' s ▁adv ances , ▁L ister ▁fle es ▁back ▁to ▁Star bug , ▁forcing ▁the ▁others ▁to ▁escape ▁as ▁well ▁with ▁the ▁parts . ▁ ▁An ger ed ▁at ▁their ▁actions ▁ups et ting ▁his ▁daughter , ▁the ▁chief ▁sends ▁his ▁pet , ▁a ▁domestic ated ▁polym orph , ▁after ▁them . ▁The ▁polym orph ▁man ages ▁to ▁get ▁ab o ard ▁Star bug ▁und et ected ▁before ▁it ▁leaves ▁the ▁moon . ▁While ▁L ister ▁and ▁K ry ten ▁work ▁to ▁install ▁the ▁new ▁parts ,