Anna Walton's life has been marked by challenges, but her world takes an unexpected turn when she decides to apply for the position of caretaker for Jack Weston. Jack is the last surviving member of a wealthy family, grappling with a unique mental condition that causes him to perceive himself as different people each day. One constant in his life, however, is his intense attraction towards Anna. As Anna tends to Jack's needs with unwavering dedication, she finds herself each night questioning who the man in her bed truly is, a stranger to her yet deeply entwined in her heart.