The Doctor, Amy and Rory travel to Earth in the 22nd century after being struck by a solar flair. They land by a factory, where a small crew are extracting acid out of the ground. Their method for extraction is to use dopplegangers (Gangers.) Creatures created in their own likeness and made out of a plastic substance, called the Flesh. Trouble is another solar flair strikes and causes mayhem, acid pipes burst and it floods everywhere, but worse the gangers become permanent, two sets of the same person, with all the memories, feelings and consciousness.
It's really well acted, it looks really good, I don't know why but I've never really liked this story, same as I can't define why I don't like The Sunmakers from the classic series. It's not bad but I just don't get into it. Partly perhaps because I'm not getting a bit fed up with Amy's character, I get that she's excitable and feisty, but I think Rory's character is overshadowing her. I like the questions posed by the gangers, Jennifer with Rory especially. We all knew that cliffhanger was coming didn't we. 6/10