In our dimension, Pete Tyler was the absentee father of the first NewWho companion, Rose Tyler, and a bit of a trickster. The TARDIS team visited a parallel dimension, though, and found Pete Tyler to be an offspring-less industrial magnate, whose ex (Rose’s mum) had a dog called – wait for it – Rose. In the end, the three were united to form a new family. Standard.
It’s Rose’s last episode (sort of), with Sarcastic Daleks, a Doc who doesn’t give a damn, and a Tyler family reunion
The Doc euthanises a young bride-to-be, tortures millions of people to death, and then Mickey and Jake go to France.
A crazy billionaire creates the Cybermen in a bizarro London, and alternate-universe-Mickey (aka Ricky) is really angry.