The magical tale of a mouse who sets foot on a woodland adventure in search of a nut. Encountering predators who all wish to eat him - Fox, Owl and Snake - the brave mouse creates a terrifying, imaginary monster to frighten them away. But what will the mouse do when he meets this frightful monster for real?
| Actor | Role |
|---|---|
 Helena Bonham CarterMother Squirrel (voice) | Mother Squirrel (voice) |
 Rob BrydonSnake (voice) | Snake (voice) |
 Robbie ColtraneThe Gruffalo (voice) | The Gruffalo (voice) |
 James CordenMouse (voice) | Mouse (voice) |
 John HurtOwl (voice) | Owl (voice) |
 Tom WilkinsonFox (voice) | Fox (voice) |