On the island Bornholm, life is peaceful—unless you are a mischievous troll with a signature hair curl and a love for causing trouble! Curly Burly is supposed to become the next cave master and keep the trolls safe from humans. But instead, he’d rather pull pranks and fly around on the backs of bats. Curious and courageous at heart, he sneaks above ground to see what life is like beyond the cave. With his bossy sister Bobba by his side, Curly sets off on a crazy adventure full of surprises!