An ancient machine stirs beneath the waves. The ocean's heart is beating again.Dr. Mara Veylan dives to uncover shipwrecks, artifacts, and history-but this time, something is different. On a routine descent, she feels it: a pulse. Not her heartbeat. Not the sea. Something deeper.Soon, fragments of strange gold dust cling to her skin. An impossible artifact begins to hum beneath museum glass. And shadows-smooth-faced, not-quite-human-move through the crowd, drawn to the pulse as if answering a call.Caught between her enigmatic mentor, a stranger who calls himself Kaelis, and forces older than recorded history, Mara must decide who to trust. Because the truth is no longer buried. The Spiral Gate is real. And once it opens, the ocean will remember everything humanity tried to forget.