Betrayal

S1, E1: Betrayal

Available on Prime Video, Tubi TV
On Thalia's birthday, Salmacis, the Spirit of the Well, predicts that Thalia will first betray and then save the Meadowlands. When Thalia loses her necklace, the evil traitor Phaedon takes it to Lord Kann's fortress where it is filled with a poisonous liquid. Daiman unsuspectingly takes it back to Thalia.