Mom and Dad eagerly await the arrival of their baby. But M, who receives this name as an onomatopoeia for lack of a better fit, is a rough-skinned baby who doesn't want to be petted. He's not pink either, but rather brownish and furry. He also screams and groans constantly, refuses to drink milk, take baths, or sleep with the stupid lullabies placed near his crib. To his parents' surprise, M is a wild and untamed creature with a very particular vision of the world around him. In this situation, the parents wonder if they made the right decision...