It's Christmas. The year is 2049. Amara Vivian Graves is mourning the death of her husband John Darnley. While undergoing bio-nanochip treatment for depression, Amara finds herself hurled back in time to the year 1999. There, she meets others who've suffered the same fate and the younger version of her future husband. Over the course of living through her second Christmas of 1999, Amara, with the help of a time traveling AI robot, must decide to stay in the past or return to her reality of day-to-day living without her one true love.