STORY PLOTLINE
The TARDIS arrives on the planet Exxilon, where all electrical energy is drained off by an unknown force.
The Doctor meets a Marine Space Corps expedition from Earth who tell him that a plague is sweeping the galaxy and that the antidote, parrinium, can be found only on Exxilon. Their ship has been disabled by the energy drain, so they are unable to leave with the mineral.
DVD EXTRAS
COMMENT
