It's Snowing on Bois-Câlin

It's spring, but the snow will not stop. In a forest gone wild again, far from everything, a village of hedgehogs perched in the trees is slowly vanishing under a blizzard that has no business being there.

The Kittens arrive in the middle of a scuffle on the road: two young hedgehogs, Pio and Pia, are facing off against soldiers of the Black Horns. What starts as a makeshift rescue leads them to the village of Bois-Câlin, and to its leader: Yrna, an old albino hedgehog who watches over secrets older than she lets on.