A beautiful story, regarding the TARDIS crew landing inside a computer simulation of a forest, which has been copying people's memories to show them their possible futures. Steven and Harla's romance is sweet and believable, and Vicki also gets some nice character moments, despite being absent from a significant chunk of the story. She is faced with the opportunity to see her late father again, but tragically fails to reunite with him, which really makes you feel for the poor girl.