Originally born on Earth, Jake Carstairs and his twin sister Vienna moved to colony planet Chelsea 426, which orbited Saturn. His parents ran a hotel there and they assigned chores to their children. Jake often dreamed of flying into space one day. When he was fourteen he met the Doctor during the Rutan invasion of Chelsea 426. He, the Doctor, Vienna, and his other Bess Carstairs went to the opening presentation of the flower show there. His mother was affected when Professor Wilberforce activated a plant which put her under the control of the Rutan Host. He and his sister were evacuated with the Doctor. They [statement unclear] the TARDIS, along with a stranger known as the Major. He later stopped the Sontarans from destroying the Earth. After the invasion was stopped, his mother was free