The Doctor meets Rose Tyler, who soon comes to realize that all of planet Earth is in danger.
The Doctor takes Rose on her first voyage through time to witness the death of Earth.
The Doctor and Rose return to 1869, where Charles Dickens joins them in the battle against the Gelth.
A spaceship crashes into the Thames, causing the world to panic.
The Doctor, Rose and Harriet Jones are trapped inside Downing Street while outside, interplanetary war looms.
A billionaire in Utah holds a relic of an alien race that is one of the Doctor's oldest enemies.
In the far future, Adam learns what it takes to be the Time Lord's companion.
Rose travels back to the day in 1987 when her father died. The results aren't what she expected.
During the London blitz of 1941, an unearthly child haunts bombing sites.
With the plague spreading throughout London, the Doctor and Rose strike a deal with con man Captain Jack.
The Doctor learns that a proposed Cardiff City nuclear power plant is actually a nefarious alien weapon.
The Doctor figures out that mankind is blinded to a previously unknown danger that threatens its existence.
The Doctor and Rose's friendship is tested when Earth goes to war.