Jason and Jemima have joined a new art club. Grandpa wants to join in the fun so he shrinks and sneaks into the class. But Mrs Pointy Pencil the teacher isn't making it fun at all - Grandpa decides to ...

Only seven-year-old Jason knows about his Grandpa's magic cap. When he puts the cap on Grandpa shrinks and creates comic mayhem, but somehow Grandpa and Jason always manage to save the day. It's ...