"Hedgehog didn't want to play outside. He didn't want to play dress-up. He didn't want to go sky-diving. He didn't even want his favourite noodles. He was, simply, Not in the Mood....[This is a] tale of a hedgehog who wakes up feeling sad without knowing why. But with patience and understanding, his friends help him understand that it's okay to have tough days. Through love and friendship, they show him that feelings, like the weather, can change." --publisher's website.