Midge takes the Master back to Perivale. With Ace slowly transforming, the Doctor sees a way to bring the rest back to London.
Only with Midge now citing the Survival of the Fittest mantra in the boxing gym. It seems the Master is aiming to make a killing in the stock exchange.
Of course the Master will use Midge to kill off the Doctor. He wants to get his hands on the Tardis. So a showdown is arranged by motorbikes.
As for Ace, she finds a soulmate in Karra. Someone who transforms into a human when Karra is killed by the Master.
It was an underwhelming finale, it was a bit of a mess actually. The Yuppie elements seemed crowbarred in just as they were going out of fashion.
The duel on motorcycles was inspired by Romero's movie Knightriders.
Even the final confrontation between the Doctor and the Master in the dying Cheetah planet was a disappointment.
With John Nathan Turner sensing that a new series would not be commissioned. Sylvester McCoy was later drafted in to give a hastily written closing speech before the end credits.
That was that. A television legend goes out on a whimper and falling ratings because of indifference from BBC executives. They never did find that next big sci fi show in the 1990s.
They had one under their noses all that time. It took a new breed of television executives and writers to mine that sci fi gold. It was called Doctor Who and it went on to become a worldwide hit!