In 1921, the passenger vessel Lady Crithania meets catastrophe when a colossal wave strikes without warning, leaving the ship overturned and sinking into the ocean. Four distinct survivors must navigate the disaster and find their way to safety, each carrying their own burdens and complications. Capris Wisher, an architect, struggles to protect his ailing sister Amy as they race against time. Redwin Gardner, a counselor, must guide a group of travelers including a mother and her children toward escape. Dr. Jeffrey Howell attempts to survive alongside his wife Adela, while Luke Haines, a crew member whose earlier warnings went unheeded, fights to lead others to safety through the wreckage. Their paths intersect amid the chaos, forcing each character to overcome personal obstacles while confronting the immediate threat of the drowning ship.