You’ve been summoned—alone, in secret. Mr. Matthews, the eccentric leader of the Keepers of Balance, has one obsession: the Talisman of the Ocean. It’s no longer safe, and only you can retrieve it.

Armed with strange gear and an aging submarine, you plunge into the depths of a hidden ocean realm to retrieve a lost artifact. And when you return, ask yourself: What did you really bring back with you? The Talisman awaits. But so does the cost.