This is episode 3 of 30 of Forbidden Siren. Play it below, then continue straight into the next episode — the whole season is free and needs no account.
Opening of the season — the setup and the first turn.
Lenore, the last siren born with dual light and dark blood, meets sea guardian Aiden. Sea elders conspire with a human consortium to seize her power and rule both realms. Her balanced power defeats them but unleashes a world-ending beast. She sacrifices herself to reseal it, securing lasting peace.