A hedgehog called "Thorn" was born with something unique. Not only his back but his belly was also covered with tiny sharp thorns. Owing to these thorns on the belly, Thorn couldn’t get along with his siblings. Neither could he hug his beloved mother. As Thorn grew up, he moved to an old tree hole in the dark forest by himself, and built a barrier of thorns. Until one day, an innocent sheep ran into his life…