Mother Nature: Age of Darkness

After the battle against the Titans, the Guardians hope they can now have peace, but it doesn't last when Pitch comes back along with his master Razan. Then, Man on Moon chooses a boy named Nick to have a roll in this battle and Raina will have to make a difficult choice that may haunt her forever. Can the Guardians stop Razan & Pitch or will the world plunge into eternal darkness?