Based on the brilliant and popular series, The Infinite Quest sees the Doctor and his companion Martha step into a new dimension - a cartoon one. The pair set off on an animated adventure through space following a trail of clues across wild and wonderful alien worlds, to find the location of the legendary lost spaceship, the Infinite. However, the evil space pirate Baltazar is also searching for the ship, believing it will grant him his dearest wish - a means to destroy Earth and rule the galaxy. With spectacular animation, this vibrant cartoon is as gripping as any usual episode of Doctor Who.