Uncle Pete and TM embark on an adventure to find their missing plane. With the help of some ingenious squirrels, a kindly dolphin and a friend from the past, the pair eventually find themselves in the strange and foreboding forest of lost things. Along the way they they encounter some scary, gigantic cats, a rogue tidal wave and other dangerous dilemmas, but with bravery, cunning and lots of jam sandwiches they overcome the obstacles and make some new friends along the way.