The Doctor, Amy and Rory arrive in a future Earth where a small group of humans operate a plant extracting highly dangerous chemicals. To minimize the danger to themselves, they create clones made of a plastic-like substance, 'gangers' (short for doppelganger) who do the actual work. While forming their clones however, the Earth is struck by massive solar flare activity that transfer the humans' emotions and memories in addition to their technical abilities. As they all try to deal with what has happened, the gangers are clearly no longer prepared to accept the limited status they previously had and insist on being treated as sentient beings in their own right. As it turns out, others have been affected as well. Written by
Did You Know?
Sarah Smart had no idea which of the Two Jennifers she was playing at times. See more
[Kisses Rory on the cheek
Amy's a lucky girl.
Yeaah, she is.
"You Don't Have to Say You Love Me"
Written by Pino Donaggio
, Vito Pallavicini
, Vicki Wickham
and Simon Napier-Bell
Performed by Dusty Springfield See more