The Last Citadel

Read The Last Citadel Storyline:

Bastion. A solitary fortress isolated in an endless sea. A city of
secrets where the ruling elite dominate with an iron fist and ambition
ends at the city walls. For most of the time the city is surrounded by
water but one day a month when the moon is at its highest, the water
recedes and uncovers the causeways linking the city to the outer towers.
This is Moon-day, the time when the trades bring their specialities to
market and the whole Citadel enjoys the celebrations the festival
brings. So when the city's stargazer predicts the water level will drop
even further, nobody takes any notice. Soon though, the predictions are
proved correct and as the sea falls it reveals secrets that have never
been known before. Secrets that are at first exciting, then disturbing
and ultimately...terrifying!