It's Kai's dream to become a soldier just like his father. He always trains and prepares for upcoming battles, but he is told to stay behind every time. No matter, he embarks on his own adventures, but what happens when two unlikely souls meet one fateful day? Everything changes as he discovers the world of Wolfwalkers...

Kai Smith. In the Underground. Surrounded by monsters unlike anything he's ever seen before. All sorts of shenanigans ensue. This should be pretty self-explanatory, let's be real here.