"Some doors, once opened, cannot be closed from this side."
When a massive black fleet of ghost ships begins emerging nightly from the Bermuda Triangle, decimating merchant and naval vessels alike, a disgraced British cartographer named Edmund Hartley discovers the fleet is following a map that shouldn't exist — a map he drew in a fever dream ten years ago. Recruited (kidnapped) by a Pirate Lord with a personal stake in the supernatural, Edmund must race to understand what he unknowingly charted before the Obsidian Admiral completes his crossing and the barrier between the dead sea and the living one collapses permanently.
