by Chad Denton
Dodo frustrates Stephen by being clueless to an almost surreal degree, hopping out of the TARDIS without hesitation into a jungle and thinking she can just hop on a bus back to London. The Doctor actually agrees with Dodo – at least insofar as he thinks they actually are still on Earth somewhere. Dodo, who is at least knowledgeable about animals, notes that the jungle is filled with different species from across the world while the Doctor discovers that there is no sky but a metal roof. The mystery unravels when the Doctor and the others are taken to a group of humans by alien beings, the Monoids. They are told that the ship is a futuristic Ark, taking the human race and samples of all its species away from an Earth that’s slowly being destroyed by an expanding sun to a new world much like Earth, a journey that will take 700 years. The Monoids are an alien race that migrated to Earth long ago from their own dying world and “offered” to become servants in exchange for their new home. Most of the human population has been reduced to a microscopic state and placed in stasis until the ship finally arrives at the new planet, while the humans left active are Guardians, who, along with their descendants, are expected to protect the ship. After figuring out the Guardians’ understanding of time, the Doctor deduces that they’ve wound up 10,000,000 years past the twentieth century.
While most of the Guardians are willing to trust the Doctor and the others, things quickly become tense when a cold Dodo has spreads to the Guardians and the Monoids, who have no resistance because the common cold had been wiped out for millennia. When the chief Guardian is struck down by the illness, the deputy chief, Zentos, has the Doctor and the others arrested and puts them on trial. Zentos accuses them of being sent from the planet they are traveling toward, Rathusis, to sabotage the mission. His paranoid arguments win the day and the Doctor and the others are sentenced to be ejected into space. However, the chief Guardian intervenes and, seeing that Steven is also sick, orders that the Doctor be given a chance to cure the illness but only if he uses Steven as his test subject. The Doctor essentially reinvents the flu vaccine, which stops the plague and of course allows the TARDIS crew to leave as heroes.