There is a place, under the everlasting sky, in the ocean, that calls out to the bravest among you... "We challenge your righteous companions," Intern-kun shouted."And they shall fear us!" An ancient evil stirs once more, driven forth by fantasies of riches and redemption... Essex, Enterprise, San Diego – these despicable blasphemers are not content to sleep peacefully beneath the sky... Their light casts a shadow. The Sirens, united, can find cracks in the sturdiest of armors and gaps amid the most unrelenting cannon fire. And once you have been swallowed by the ocean into its dark abyss, you will realize the truth. You will cry out: "We are the Flame!" "We are kin to the Sirens, and we will surely succeed." That voice will echo through every nook and cranny in the abyss... until victory finally comes.