A failed movie night gives Groovy a brilliant idea. He creates a great instrument from corn grains and an old can. Now he shows us how everyone can easily play his own campfire song.
A loud popping and puffing sound from Groovy's construction wagon. Groovy and today's guest prepare popcorn for a laid-back movie night. When he turns on his projector, smoke rises and they are cloaked in fog. Groovy sadly realizes that the projector is broken and the movie night is over. But Groovy immediately has a new idea how to save the evening. From the remaining corn grains and an old can, he and his guest make a rattlebox. Groovy shows how to shake the can to the rhythm, then it's the kid's turn. Now it's time for practice. After successfully learning the beat, the kid shakes the rattlebox and Groovy plays ukulele to the campfire song.