Willington Place, London, 1879.

In London's bustling streets, business is booming for Mabel Arkwright's hat shop. But as her health declines, she must entrust Emily Pearson, her capable and beloved employee, with more responsibility.

After Mabel's death, Emily is stunned not only to inherit a completely unique broad-brimmed straw hat, but also the shop. But it isn't long before the extra work leaves Emily on the brink of exhaustion. Resolving to get some rest, she takes a trip to the south of France.

There, she meets the stylish and enigmatic Paul Anderson Steerman who is instantly captivated by Emily's beautiful straw hat and sweeps her off her feet. But when they return to England to start their life together, it soon becomes clear that Paul isn't the man he claims to be. Can Emily free herself from his clutches or is it too late...?