The Infinite Quest is an animated serial based on the British science fiction television series Doctor Who.

It was aired in twelve weekly parts (three and a half minutes each) starting 2 April 2007 as a segment of the children's spin-off show Totally Doctor Who.

[3] An alien named Baltazar has set his sights on Earth, planning to compress its population into diamonds.

Caw takes the Doctor and Martha to his home planet Pheros, where he spits up a datachip, explaining that it and three others like it hold the location of The Infinite, an ancient spaceship that can grant people their heart's desire.

He explains that the desires granted by The Infinite are little more than illusions, the last spark of whatever powerful being died within its walls.

"[1] The Firestep website attributes the name to former Cosgrove Hall animators Jon Doyle and Steve Maher.

An earlier animated series based on Doctor Who, to be produced by Nelvana for CBS, was planned in the 1980s, but fell through.