The Pledis Council has known for centuries that their realm would be protected by the bearers of enchanted rings. They thought the answer had finally come when Aron and his friends had taken on the rings, defeating several of their enemies. One day everything goes terribly wrong, nearly dooming the realm.
Now thirteen young men have been selected and given the rings, but Seungcheol begins to become suspicious when the rings fail to give them power. He overhears that some of the rings holds dark properties, but it's unclear which rings are tainted. His fears are realized when he finds out that the Pledis Council will take strong actions against the ones who are wearing the tainted rings. Seungcheol decides that he's not going to allow this to happen, keeping an eye on all of the young men to see who holds the certain rings. He will keep them safe, no matter what happens, but will he sacrifice the safety of the Realm for twelve young men?