Uroboros ( comic story ) Uroboros was a " Doctor Who Magazine " comic story featuring the Eighth Doctor . Summary . Part one . Having being summoned by the Doctor , Fey appears in the TARDIS . The Doctor uses Shayde ' s abilities to trace the creatures that have kidnapped Izzy and finds that they have been followed in their travels since she switched bodies with Destrii on Ophidius . Having returned to the ship , the TARDIS ' power is being drained . Fey leaves to find the power inhibitor , and the Doctor is stopped by a group of Mobox , led by Major H ' rakk . Ophidius has now been taken into the atmosphere to be repaired ; The Mobox are preparing for war . Fey wonders why the Doctor has been acting so agitated , and finds the integrated processing cortex . She is attacked from behind by a Mobox , who knocks her out and picks her up , deciding that she deserves closer examination for surviving . Part two . The Doctor is taken to Presidor B ' rostt ' s speech , where he meets C ' sorr , a seer , who gives him a grim warning . He then meets with B ' rostt in his office , where he realises that he is the same Mobox as the one that killed Destrii . Meanwhile , Fey is being kept in a force - field by S ' lokk , the chief scientist of the Mobox . She realises that she cannot escape without becoming a vegetable . Shayde has an idea , but decides that Fey will not like it . S ' lokk contacts B ' rostt and tells him that he believes Fey to be in league with the Doctor and that the two are plotting to steal Ophidius . B ' rostt then orders H ' rakk to kill the Doctor , who crashes their ship in a lake . H ' rakk drowns , but the Doctor escapes and encounters Destrii , who is somehow still alive and armed with a bow . She takes aim at the Doctor . Part three . A creature bursts from the bushes and is killed by Destrii before it can attack the Doctor . He demands to know how she is still alive , but she dodges the question . On Ophidius , S ' lokk demonstrates the Mobox ' s ability to deconstruct matter then reconstruct it later by reconstructing a terrified Ophidian . Fey accuses him of torturing the Ophidians , but he believes they only have the right to a choice : Obey or die . A scientist confirms that Ophidius is fully operational , and S ' lokk orders a test - flight . Shayde reveals his escape plan ; If Fey allowed him to possess her , they could survive escaping the force - field . Fey refuses . Destrii reveals that B ' rostt did not kill her on Ophidius but deconstructed her in order to later execute her . She was then rescued by an unknown being . She then agrees to help the Doctor escape the planet . They visit C ' sorr , realising that he tried to warn the Doctor of B ' rostt ' s corruption . He decrees that the world - eater has awoken . As Fey allows Shayde to take over , Ophidius reveals itself to be alive , killing the scientists and breaking free . Part four . Ophidius attacks the Mobox for trying to control it . Destrii assists the Doctor in stealing a ship and gets the impression that he cares about her . He coldly replies that he only cares about keeping Izzy ' s body intact , and that the girl wearing it can rot . Shayde escapes the force - field , but refuses to give control back to Fey , as he feels that he needs to kill Ophidius . However , he begins to be influenced by Fey ' s morals and returns control to her . Now pursued by B ' rostt , the Doctor and Destrii fly into Ophidius when it demands to see " the saviour " . Fey rejoins them , and the three enter the integrated processing cortex . When they realise that Ophidius means that Destrii is the saviour due to her killing Gorolith the last time she was on board , they force her to try and persuade it to stop attacking . Destrii relates to its situation and asks it to not kill any more people , until B ' rostt and his men appear , and she orders it to kill them . The Doctor realises that it was C ' sorr that saved Destrii from B ' rostt . The seer tells him that he will fail in retrieving Izzy . More determined than ever to rescue her , the Doctor returns to the TARDIS to take Destrii and Fey to Destrii ' s homeworld . Plot . " to be added "