When Allison falls into a coma after a bike accident in the modern day, she is suddenly thrust into the body of Becky Thompson in 1906. It turns out that Becky helped Allison stay alive, and now Becky wants Allison's help to prevent something horrible from happening in Becky's own time. Now Allison is trapped in Becky's body in 1906, trying to solve a mystery in a race against time to save Becky - and herself.