The Rylance family is stuck. Dad's got writer's block. Ethan promised to illustrate a group project at school--even though he can't draw. Sarah's still pining for a puppy. And they all miss Mom.

Enter Inkling. Inkling begins life in Mr. Rylance's sketchbook. But one night the ink of his drawings runs together--and then leaps off the page! This small burst of creativity is about to change everything.

Ethan finds him first. Inkling has absorbed a couple chapters of his math book--not good--and the story he's supposed to be illustrating for school--also not good. But Inkling's also started drawing the pictures to go with the story--which is amazing! It's just the help Ethan was looking for! Inkling helps the rest of the family too--for Sarah he's a puppy. And for Dad he's a spark of ideas for a new graphic novel. It's exactly what they all want.

It's not until Inkling goes missing that this family has to face the larger questions of what they--and Inkling--truly need.