Doctor Who: The Three Doctors
Gel creatures materialise around UNIT HQ and commence a full-scale attack.
Episode 1
Attacked by an antimatter creature the Doctor sends an SOS to the Time Lords.
Episode 2
The Doctor and Jo pass through the black hole to the desolate world of antimatter.
Episode 3
The Doctors are trapped in the universe of antimatter where they confront Omega.
Episode 4
Omega intends to escape his antimatter world but needs the Doctors to take his place.
