Beware the deep, dark forest! You should never, ever go in there... Rosie has always followed this rule until the day her pup Tinky goes missing in the woods. So Rosie decides to trek into this dangerous, muddy place. But there are many obstacles along the way - including a huge grey wolf, a ravine of lava and a ferocious troll! Can Rosie find the courage to overcome these dangers and save Tinky?