TEXT: EXT. STREET, DAY It's a windy fall day. A MAN is strolling down the road, trying to read a map as the wind blows it around in his hands. The DOCTOR peers over his coming book - "The Beano Summer Special, 1981" - and watches the MAN. The MAN walks along the sidewalk, looking around to get his bearings. A leaf blows loose from a tree and covers his face, causing him to stagger into the road in front of an oncoming car. He pulls the leaf from his face and turns around to see the car and he freezes. A WOMAN pulls him out of the way of the car. WOMAN: Oh, my stars. Are you all right? MAN: Yeah. I'm fine. The MAN smiles at the WOMAN who nervously pushes a strand of hair behind her ear. The DOCTOR watches from the bus stop across the street. EXT. STREET, NIGHT The MAN and WOMAN huddle together under an umbrella as thunder rumbles. They run up the stairs to her house. MAN: So I've got something for you. WOMAN: What? The MAN pulls the leaf from his pocket and holds it up. WOMAN: You kept it? MAN: Of course I kept it. WOMAN: Why? MAN: Because this exact leaf had to grow in that exact way in that exact place so that precise wind could tear it from that precise branch and make it fly into this exact face at that exact moment. And if just one of those tiny little things had never happened, I'd never have met you. Which makes this the most important leaf in human history. They kiss. Across the street in the rain, the DOCTOR watches before walking away. INT. NURSERY, DAY The WOMAN looks in on the MAN who is sitting in a chair, holding their sleeping baby girl. INT. PARLOR, DAY The MAN and WOMAN play with their young daughter. INT. BEDROOM, DAY The WOMAN is showing her daughter her favorite book - "101 Places to See" - as
SUMMARY:
The Doctor investigates Clara's past, finding nothing unusual but discovering that her mother died when she was young. When he returns to Clara, she requests that she be taken to see "something awesome". The Doctor takes her to the Rings of Akhaten, a ring system orbiting a large planet where the local religion believes life began. The society's currency is items of sentimental value. Clara runs into a young girl named Merry Gejelh, who is about to be sacrificed in the Festival of Offerings, which is to appease the Old God. The Doctor and Clara save Merry and discover that the Old God is really a parasite of memories and sentiment that lives inside the large planet. Clara offers it her treasured leaf that caused her parents to meet, and as she points out that there are infinite possibilities to every choice, she defeats the parasite.