Meanwhile, Rorvik and his crew have discovered TARDIS. Romana leaves to talk to them. Rorvik, believing Romana to be time-sensitive like the Tharils, dupes her into returning to their ship to examine the engines. When Romana does not return, Adric and K9 leave to recover her, but get separated; Adric eventually makes it to the ship and hides aboard, while K9 reunites with the Doctor and aids in repairing the Gundan, after which he learns from it that they were built by slaves and used to overthrow their masters in a violent battle. The Doctor's work is disrupted when Rorvik and several of his men arrive. During a stand-off between the crew and the Doctor, another Gundan activates and walks through the seemingly-solid mirror. Rorvik demands an explanation from the Doctor, revealing he has Romana captive, but the Doctor's only response is to walk through the mirror himself.