Wombat is having cello lessons but is finding that learning how to read music and understand the meaning of music notes and values, is much too hard to understand. Accompanied by Koe Koala and Pocket Kangaroo, Wombat visits the Music Shed where the animals enjoy movement and rhythm discussions with Professor Anacrusis. But while they are busy working out note values, and playing with music notes in the train carriages, there is trouble brewing at the Music Shed. So what really happens when some of the music notes decide to run away?