The document provides a concept for an post-apocalyptic story set in a world covered by oceans where humans live on caravans of boats. It describes a world where a catastrophe caused 85% of the human population to perish and the remaining live on nine large boat convoys. The convoys cultivate patchs of land and catch fish for resources. When large storms approach, the convoys must move to avoid being frozen for months. The story would explore the cultures of each convoy and challenges of living in this world, following two 19-year-old main characters as they encounter mysteries like an ancient space elevator.

1. Ocean Caravan 18 th Moon Station