Little Jack is having a day out in London with his Grandma. It's a sunny day so he must wear his little green sunhat. All is going well until they take the open-top, sight-seeing bus and a gust of wind blows Jack's sunhat away. Jack and Grandma have to continue on their tour without the sunhat but it seems the sunhat is taking a tour of its own. Discover all the sights of London with Jack and his Grandma and read how Jack's sunhat finds its way back to him.