How to Hide an Oak Tree

S1, E1: All Oakley wants to do is join in with his friends’ game of hide-and-seek. There’s just the small issue of Oakley’s enormous size and obvious visibility. Not even a touch of Bluebird’s magic can help hide Oakley, so Rosie, Raggles and their friends set about trying to make Oakley disappear. Will they succeed in making him just a little bit invisible?