Josephine Windsor, eighth heir to the Windsor Duchy, marries into the Strong family under the alias Cora for a three‑year trial. Her husband Eric cheats with Melanie Shaw, and her mother‑in‑law Edith abuses her. She endures and gathers evidence. At a company gala, the royal envoy reveals her identity. The Strongs lose everything and beg, but she divorces and returns to claim her inheritance.