Sarah Jane discovers an abandoned baby girl on her doorstep and attempts to find out who left her there. At a local nuclear power station, a beautiful woman appears out of nowhere and uses alien powers to take control of the place.
Sky has undergone a transformation and in the process has triggered a countdown that nobody is able to stop. Sarah Jane and Sky end up being trapped between the alien war fought by Metalkind and Fleshkind. Clyde and Rani attempt to prevent the biggest bang the world has ever seen.
After some very unusual weather hits Bannerman Road, Sarah Jane investigates why. Fish are falling from the skies, and Sarah Jane's investigation ends up leading the team to the Museum of Culture. After Clyde acts the fool a little to much, his friends end up turning against him, and he is banished from their lives.
Clyde finds himself abandoned on the streets of London, living rough with no food to eat. Somebody ends up reaching out to him, but as they become friends, he's warned about the legendary Night Dragon.
