As Atlantis sinks deeper into pollution, Princess Maris keeps sacrificing her own body to cleanse the seas. Betrothed to Commander Eamon, she still turns away from the temple’s path. Then Sybil, her half-sister, enters their lives and quietly poisons trust between them. Led astray by Sybil’s lies, Eamon rips out Maris's scale. Wounded and betrayed, Maris heads to the temple on her wedding day—but the doors close before she can enter. Eamon arrives after it is too late, and all that remains is a love broken beyond repair and his lifetime of remorse.