Deep inside the snow-covered forest, it isn't just the mist which lurks around...

Moonlight, Eagle, Diamond and a scaly-backed dragon called Erlass are off to a mission to find the one and only Crystal Wolf, which holds the future onto their paws and lets the Thunderclaw Pack live peacefully. But it is not only them who is searching for it...

Moonlight's arch-enemy, Flare, who lives far away on Skeleton Island, has declined their friendship from childhood and set off to get the Crystal Wolf. Now Moonlight, leader of the pack, can only cross his pads and run, as everything counts on time...