Joanna and Elvis follow the conspirators to the ancient spacecraft and eventually find a reprogrammed Dr. Caroll cracking the weapon. Joanna replaces its current personality with a backup of the original, and the restored Dr. Carroll sets the weapon to self-destruct.[26] In retaliation for ruining their plans, the Skedar launch a strike on the Carrington Institute, capturing Joanna and taking her to their homeworld.[20] While in their spaceship, she is met by De Vries, who has also been imprisoned due to her failure to comply with the deal. Feeling that she has been used, De Vries redeems herself by making a distraction and sacrificing herself, freeing Joanna and therefore giving herself a chance for revenge.[27] Joanna is later assisted by Elvis and the pair manage to land on the Skedar planet.[20] There, she defeats the Skedar High Priest, leaving the Skedar in disarray.