Ratatouille meets The Tale of Despereaux in this timeless adventure tale of courage, friendship, and self-discovery from award-winning, New York Times bestselling author Jennifer Donnelly. Perfect for fans of The Secret Lives of Pets and The One and Only Ivan. Twix the rat is not a hero. He's a small, anxious, gray-furred nerd with a list of things to be afraid of that's longer than his tail. But his worst fear of all is disappointing his big brother, Rolo. Rolo is everything Twix isn't: cool, fearless, and the fastest RATSCAR racer in New York City. When Rolo vanishes in a cat attack at the biggest race of the year, Twix refuses to believe he's gone--and a mysterious trail leading to a sewer drain convinces him he's right. Armed with his two best friends and half an eggroll from the trash, Twix plunges into the city's secret underworld--a shadowy place of gangster raccoons, rat librarians with ninja moves, and one very gassy chihuahua.

And as the trail leads the friends to a treacherous garbage island that harbors sinister figures and a dark conspiracy, Twix soon learns that if he's to save his brother, he'll have to make a choice: keep running from his fears or finally turn and face them.