Series 1

In series one the Doctor, and his new companion, Rose, battle Autons, the last human at the end of the world, Cassandra, zombies who are actually the gelth, slitheen in Downing Street,they visit an alien museum,they stop nanogenes who are changing humans into childish like people looking for their mothers because of an ex time agent called Captain Jack Harkness and they finally go against the Daleks where we see the ninth doctor regenerate into a younger tenth doctor because Rose took in the time vortex and the doctor took it out of her, but Captain Jack who also fought the daleks with them was left in the year 200,100 after Rose took in the time vortex and brought Captain Jack back to life after him being killed by the daleks .