Cheryl Jenkins is an astrophysicist who works for the National Science Foundation reviewing grant applications for projects, although she’d prefer to be working on a project of her own. Cheryl heads home to spend the holidays with her family and for a visit to the annual Christmas carnival with her sister Trish. While there, Cheryl sees a carousel in the distance and ventures over to take a ride. But when the revolutions wind down and she returns to the carnival to find her sister, Cheryl discovers that —somehow —it’s five years earlier. Cheryl sees this as a chance to change her path by making different choices. As she navigates her way through her visit back in time, Cheryl is able to connect with her beloved science teacher Ms. Nelson, who was an inspiration to her both in and out of the classroom and had passed away five years before. The time Cheryl spends with Ms. Nelson as well as with her “frenemy” George helps her find a new appreciation for what she’s doing in life and starts to see George in a new light.