El invierno ha llegado a las montañas en las que vive Olivia y, con él, una nueva amenaza: una horda de ovejas armadas hasta los dientes, controladas por una criatura monstruosa, mitad humana y mitad ovillo de lana, que trata de someter a todo el valle, el pueblo, y hasta el mundo entero! Afortunadamente, para hacer frente a la invasión, Olivia cuenta con los Caballeros Castañas y, sobre todo, con las escasas luces de las ovejas...

ENGLISH DESCRIPTION

This is Olivia's third volume, a series full of adventure, mystery, action, funny characters, a touch of magic, ecology, powerful female characters, and a lot of humor.

Winter has come to the mountains where Olivia lives and, with it, a new threat: a horde of sheep armed up to their teeth, one that is being controlled by a monstrous creature, half human and half ball of wool, who is trying to conquer everything: the town, the valley, and even the entire world! Fortunately, to face this invasion, Olivia has the Chestnut Knights on her side and, above all, the sheep.