The Doctor gets a better understanding why he is a wanted man.

Sand-Donna returned within an hour, much to Donna's delight. She couldn't bear too long without talking. No sooner did she arrive than an opening appeared followed by daylight. Like the parting of the Red Sea Donna could see a route to the surface, which sand-Donna was now proceeding.

On the surface sand-Donna spoke to her. "We do not know why you can understand us, we have tried talking to the city dwellers but they couldn't hear what we had to say".
"Oh, that would be the TARDIS, it translates for us wherever we go". Informed Donna.

"Do you think the TARDIS would allow you to act as translator for us"? Queried sand-Donna.

"Yes, both the Doctor and I could translate for you",replied Donna, talking about the Doctor, I should get back and find him".

"We have the ability to transfer our consciousness through the sand", explained sand-Donna. "So if you go to the outskirts of the city we will reform as you there".

With this sand-Donna disappeared into the planet's surface again and Donna was left alone once more. So she set off back to the city with intentions of finding the Doctor.

--------

The Doctor understood more about the plight of the Arbustoids and could even offer a means of rectifying the problem.

"Any movement in time and space leaves a trail that the TARDIS can follow, all I need to do is enter the point of departure". The Doctor informed Aattah.

"I will get a group together and we shall accompany you back to your, TARDIS". Returned Aattah.

Motioning to two Arbustoid guards Aattah, the Doctor in tow, headed for the planet surface.