Eve and Patrick Gantly are living a normal life in 2019 New York, preparing to celebrate the Christmas season. To their delight, Eve is three months pregnant.
Despite their happiness, Eve is having premonitions that something dreadful is about to occur. Concerned about the future and the safety of their child, she insists that they destroy the time travel lantern. Patrick is more cautious.
One afternoon when Patrick is out, a sinister man breaks into the apartment and forces Eve to give him the lantern. A day later, Patrick shadows a woman who has been staking out the Gantlys' brownstone apartment, and he confronts her. To his and Eve's utter shock, they learn that Lucy Rose is from 1924 and that she time-traveled with the man who took the lantern. She offers to sell the lantern back to Eve and Patrick, and they reluctantly agree, hoping to keep it out of unscrupulous hands.
Convinced that the lantern is a threat to their future happiness, Eve and Patrick decide to destroy it. But the lantern has more power than they could have ever imagined. Once the lantern is destroyed, Eve's life is completely changed. She must set off on an adventure, in a struggle that will return her to the past.