The TARDIS has landed in a beautiful forest. While the Doctor bounds along a path enthusiastically, Rose is more wary, on the lookout for trouble. Hoping to humour Rose, the Doctor scans with his sonic screwdriver, and finds things aren't quite as they seem. Unsure of their location, the Doctor asks a young girl in a red hood what year it is, but she replies that she's on her way to see her grandmother. The Doctor reassures Rose that that the girl will be fine, and the continue down the path.

Further on, an ugly old woman suddenly pops up and offers Rose an apple. Before Rose can take it, the Doctor snatches it, and reveals that the old woman is an android - in fact everything, including the trees, is artificial in nature. The TARDIS has landed in a theme park that celebrates the imagination and creativity of humans. Rose tries the apple, and discovers it's been genetically modified to taste like a cheeseburger in an attempt to get children to eat them.

As they continue through, they see androids peacefully interacting with humans, then Rose spots a woodcutter robot going crazy. Soon, all the androids are acting against programming. As the patrons leave, the Doctor enters the control centre and discovers that a former employee has destroyed the control system for the androids, in revenge for losing his job as one of the seven dwarves.