Holly Smale, Frank Cottrell Boyce and other stars create new story
17 July 2016 Last updated at 17:38 BST
This is what happened when Newsround challenged eight celebs to create a brand new story at CBBC's Awesome Authors event.
Each celeb had to come up with a few lines - they could be as creative as they wanted, but they had to follow whatever the previous person had said.
So get ready for a boy called Joseph, gibbons, a spaceship and a dog called Kipper!
Geek Girl author Holly Smale kicked it off and the tale was completed by Frank Cottrell Boyce - live on Newsround.
Watch the full story, which also features Sam and Mark, Nicola Davies, Lucy Hawking, Leona Vaughan and Bali Rai.