On a misty morning in Ripple Valley, Bracken and his sister Wisher decide to go exploring - and end up getting very lost! Their adventure takes a frightening turn when they find themselves on the run from a fox. Then Bramble discovers a mysterious tunnel in the forest. Where does it go? And who is waiting for them on the other side?

Heartwarming and hilarious, with Anna Currey's charming illustrations, this is a brilliant animal adventure series from a bestselling children's author.