SJA: Series 5 Synopses - Aflevering 1 & 2

Part 1
In today's episode, Sarah Jane finds a baby girl on her doorstep and tries to find out who abandoned her.
At a nearby nuclear power station, a beautiful woman appears out of thin air and uses alien powers to take control. She's looking for something – and realises that Sarah Jane may just have it...

Part 2
Today, Sky has undergone an amazing transformation, but in doing so has triggered a countdown that no one can stop.
As Sarah Jane and Sky find themselves trapped between the alien war fought by Metalkind and Fleshkind, Clyde and Rani face a race against time to stop the biggest bang in history...