Gabby has been delivered into the hands of the Time Sentinels by the Red TARDIS… and the Sentinels are intent on eradicating the Doctor from Time itself. Meanwhile, The Doctor, Cindy and Cleo were on the trail of several red herrings, when Noobis send them a message from Aramuko. With Gabby refusing to cooperate and betray her friend, the Time Sentinels have sent the apocalyptically-destructive Circle of Transcendence to Aramuko – where it will destroy the planet!
