On Doctor Who Season 8 Episode 10 the world is treated, overnight, to a full overgrowth of trees!
Yes, there is beautiful greenery all around. But why? It turns out the world doesn't care why, they just want to get rid of them as soon as possible and set about doing just that.
Clara and Danny find themselves in the midst of this turmoil with a group of students. They were on a sleepover at the museum. One little girl went to find The Doctor, believing Miss Oswald told her to go, but it was really only in her head.
Can The Doctor fix a situation as dire as this one?
Clara: I'm actually frightened I never get frightened why am I frightened?
The Doctor: You just lost a little girl.
Clara: Yes, that is a worry, but I know you'll find her. No no no. This, this is not worry. This is a threat.
Clara sure seems concerned! Find out what happens when The Doctor has nothing electronic to work over with his sonic screwdriver. How will he find an answer to what may be the end of our planet?
Find out all about it when you watch Doctor Who online.
Carissa Pavlica is the managing editor and a staff writer for TV Fanatic. Follow her on Twitter.