Lost Ark Dreaming

Decades after the Atlantic Ocean rose, the survivors of West Africa's coast live in five towers that stand partly underwater off the shore. Each tower is kilometers high and was first built as a playground for the rich. Today the wealthiest rule from the top, while everyone else is packed into the dark, foul-smelling floors below sea level.

Another force is stirring. People who were thrown into the Atlantic and left for dead have been woken by an ancient power. They want revenge on the ones who gave them up to the waves.

Three residents of the towers are drawn into the conflict. Yekini is an earnest rookie analyst at a middle rank. Tuoyo is an undersea mechanic grieving a huge loss. Ngozi is a self-regarding bureaucrat from the highest levels of government.

The three of them have to cooperate if the towers are to have a future worth living in, and that future has to hold for everyone. This is science fiction with a flooded, class-divided setting, told through the viewpoints of a mix of people from the top, middle and bottom of a vertical society.