Jason Mason lives with his mum, dad, sister, dog and grandpa in the beautiful seaside town of Sunnysands. Jason and his grandpa have lots of hilarious adventures together when Grandpa puts on his magic shrinking cap. It makes him grow small enough to fit into Jasons pocket, as well as Jasons toy cars and planes which Grandpa can bring to life! When hes miniature, Grandpa especially likes to be chased by Jason around the house while yelling Catch me if you can! Grandpa is playful and mischievous, causing all sorts of mayhem when he shrinks, but despite all the chaos he causes, Grandpa is a force for good.