For whom the wedding bells toll, Arthur? They do not toll for thee! It's a race to the chapel, as Mera is awake and betrothed, but who is the groom, and why isn't he Arthur? There is a greater mystery at work, and Jackson makes a deep-sea discovery - but not before a depth-defying battle with Orm! Speaking of Ocean Master, he's bringing all of Dagon to the wedding ceremony, and the Seven Kingdoms will never be the same again!