Sky (The Sarah Jane Adventures)

A meteor crashes in a junk yard to reveal a metal man. Meanwhile, Sarah Jane discovers a baby on her doorstep who can create power surges. Sarah Jane and Rani travel to the site of the meteor crash and are met by Professor Rivers, who investigates the site with them. Sarah Jane and Rani find a homeless man who saw the metal man and describes him; they then discover that the metal man is heading to Bannerman Road.

Meanwhile, an alien woman named Miss Myers appears at a nuclear power station and discovers that there was a power surge on Bannerman Road. She goes to the road and to the garden where Clyde and the baby named Sky are about to be attacked by the metal man. Miss Myers saves Clyde and Sky, then reveals that she is Sky's mother and is an alien.

Mr Smith locates Clyde at the power station, and Sarah Jane and Rani make their way there to find Clyde, Sky and Miss Myers who reveals that her species, the Fleshkind, are fighting a war against the Metalkind. Sky is a weapon who will end the war. The Metalkind walks in, and Sky then transforms from a baby into a twelve-year-old girl.

At Miss Myers' command, Sky unintentionally attacks the Metalkind with a burst of energy. Miss Myers reveals that Sky was made and "grown" in a Fleshkind laboratory as a weapon to destroy the Metalkind. Sarah Jane and the gang escapes with Sky. Miss Myers tells the metal man he will help her get Sky and has him wired up.

Mr Smith concludes that Sky's metamorphosis was caused by her synthetic DNA and was done to maximise her effectiveness as a bomb. At the power station, Sarah Jane goes inside, and Sky follows. Sarah Jane, who is taken to Miss Myers, learns that the damaged Metalkind is wired up to the nuclear core in order for him to act as a homing device. Miss Myers reprogrammed his mind as he swears vengeance on all flesh kind, including Earth's inhabitants. Believing that the Metalkind will be destroyed upon their arrival on Earth, she activates the calling of the Metalkind. Downstairs, Sarah Jane meets up with Sky, who tells her she must save Earth and goes to the nuclear core room. Sarah Jane orders Clyde and Rani to shut down the nuclear reactor in the control room before heading after Sky.

In the control room, Clyde and Rani discover the Nuclear Rod Regulation System and remove the rods based on the order of the visible spectrum. They close the reactor as the portal closes with a large power outage. The energy from the portal backlashes on Sky, destroying her genetic programming as a bomb. Miss Myers does not want the child anymore for she is no longer a weapon. The Metalkind, who reveals that he saved some of the portal's energy, breaks loose and uses the energy as he takes Miss Myers with him.

Sarah Jane explains Sky's appearance to Gita and Haresh at Bannerman Road, telling them the adoption agency had a mixup. In the attic, Sarah Jane finds the Shopkeeper and the Captain, previously met in Lost in Time. He reveals that he placed infant Sky on her doorstep. Sky chooses to stay with Sarah Jane as her adoptive daughter.