The following day, a massive storm roils over Immersea, blotting out the sun. The freshly fed residents are taken by surprise as sea weary fishermen begin to brutally slaughter everyone they can find. Before a proper defense can be mounted, the dead rise from the sea, a massive army plodding alongside the fish men cultists that have haunted Immersea's waters of late.
The resulting massacre is devastating, and many are killed. Some are dragged screaming back into the sea alongside the drowned sailors and fish folk, while the fishermen and cultists disappear seemingly into thin air.
Immersea stand bruised, battered, but resolute.
At least until the dead rise up from the sea once more.