Miss Jane Sterling, an American, has come to live in the property she inherited-Lyon Hall. With the hall, she also inherited the King's Cloak, which she appreciates as an antique, but has no idea of its hidden value. Lord Devlin, however, knows exactly what this ancient cloak can reveal and is on a mission from the crown to obtain it.

He arrives at Lyon Hall at night, claiming his carriage has lost a wheel. Jane has no choice but to invite him to spend the night. At first she believes the handsome lord may be interested in her, but she soon realizes he's really after the cloak. When she attempts to protect the cloak, she accidentally creates a comedy of errors that force the two of them into each other's company, neither trusting the other as they set off on a treasure hunt...