1990: Bill Milo leaves home to see the world. He crosses desert and ocean, searching for purpose but never quite finding it. One day, Bill meets an old man taking his daily walk. He warns Bill that God will soon test mankind with a great flood, and that man will respond with fear and division. His words haunt him for years to come.

2015: August Milo spends her time caring for her grandparents and running her bakery. On a cold winter day, a customer named George orders a cake for his grandmother's hundredth birthday. They find warmth in each other.

2025: Tyler Haji plots to avenge his brother's death. Before he can realize his duty, a once-in-a-millennium flood ravages the East Coast. Many of the survivors flee west to join Bill Edenson, an alleged modern-day prophet; others stay and adhere to a resurgent Eastern regime. Tyler wallows in his past among the Eastern ranks until a greater calling beckons him west.

0017 Post-Flood: Succession is the natural order of things. Adam memorized his father's words at a young age. Sooner than later, Adam would take on his father's mantle, just as generations of Crombies before him had. Adam woefully accepts his fate until a mysterious herald names him heir to a greater prize: the West.

Spanning time, genre, and place, Zephyr traces the impacts of trauma, hope, and pride on ourselves and on those we hold dearest.