Hold on tight and dive deep into an action packed adventure that travels far below the ocean surface. When Grandude unveils his latest incredible invention, a bright green submarine that can fly through the sky and glide underwater, his grandchildren are thrilled for a brand new ride. You will travel along with the Chillers as they explore the magical depths of the sea. But when their marvelous machine gets caught in a tricky situation, it will take another legendary explorer to save the day. Nandude arrives with her remarkable accordion ship and her own special kind of musical magic. Get ready to dodge a giant grabbing octopus and dance with rainforest animals. This fast paced story celebrates the amazing bond between grandparents and grandchildren. It is a joyful, music filled journey packed with teamwork, bravery, and plenty of brilliant surprises.