After overtime work, Ethan hands a hot takeout meal to a scruffy homeless man, who warns him
to flee to high ground for an incoming catastrophic dam‑break flood. Dismissing the strange
warning at first, Ethan is jolted by a mysterious late‑night text. Risking ridicule, he stocks supplies
and moves to a rooftop. When the devastating flood submerges most of Harbor City, Ethan, his
roommate and other trapped strangers must band together to survive looters, shortages and
despair, while uncovering the homeless man’s shocking true identity as a discredited former
dam engineer.