The Doctor returns to Metebelis 3 where he must face the spiders’ ruler, the Great One.
Sarah makes a bargain with the Queen Spider and returns to Earth with the Doctor.
The Doctor is in a coma and Sarah is held prisoner in the spiders’ larder.
Following Lupton, Sarah is accidentally transported to Metebelis 3 where she is captured.
Lupton, now under the control of a giant spider, steals the blue Metebelis crystal.
The Doctor receives a mysterious package from his old companion, Jo Grant.