Lloyd begins having distressing visions of a Blood Moon and seeks help from the Source Dragons. He and the ninja are led to Egalt and Rontu, two dragon masters who can teach the ninja a special technique called "Rising Dragon." Deep in the Wyldness, Lord Ras reassembles an ancient clan of warriors known as the Wolf Clan, and revives a dark and corrupted form of Spinjitzu known as Shatterspin. The Wolf Clan prepares for a ritual on the soon-approaching Blood Moon to free an ancient group of evil elemental masters, known as the Forbidden Five, from imprisonment. When three Arc Dragons are mysteriously murdered for their crowns of horns, the ninja must participate in the Tournament of the Sources to search for the culprit. Meanwhile, Arin begins to wonder about his position in the ninja after being told by Ras of Master Wu responsible for the Merge and the disappearance of Arin's parents.