Yotsuba recycles! Gets a bike! Learns about sticky notes! And drinks some super-yummy milk which she then decides she has to share with EVERYONE! But when she forgets to share with Fuuka, this
spontaneous little milk lady takes her new bike and goes off on a heart-thumping little adventure of her own, much to her daddy's chagrin. What trouble will Yotsuba get into next!?