Emma Carter, a modern-day archaeologist, discovers an ancient locket while excavating a Victorian-era mansion. Unknowingly, the locket triggers a time loop, pulling her back to 1885 every night at midnight. In the past, she meets Edward Hawthorne, a dashing yet reclusive inventor who is shunned for his unorthodox ideas. Their nightly encounters spark a whirlwind romance, but Emma learns that Edward’s experiments with a mysterious machine are the cause of her time travel—and that he is fated to die in a fire that destroys his mansion. Determined to save him, Emma navigates the complexities of time travel, uncovering secrets about Edward’s invention and the reason the locket chose her.