Jack was seven and Chloe was six. Jack liked his sister, but loved to play tricks . . .

So begins this rollicking, rhyming tale of sibling rivalry - with a difference! When Chloe's silvery crayon develops magical powers, it sparks a thrilling chase through a fairytale world - an unbelievable adventure where her drawings spring to life!

Can Chloe use all her creativity and inventiveness to rescue her brother and save the day?

An adventure from the author of Do Not Enter the Monster Zoo, brought to life by bestselling illustrator Ali Pye.