Bombarded by thaesium radiation, Ky begins an incredible transformation.
With Jo held prisoner, the Doctor is forced to work for the Marshal.
The Marshal prepares to bombard Solos with ionisation rockets.
Ky opens the message box but is unable to understand the ancient carved tablets inside.
Fearing Jo has died on Solos, the Doctor is forced to make its atmosphere breathable.
On the Skybase above Solos the Marshal wants to stop the planet achieving independence.