Andrea Baldwins usual country-walk with her dog, Muffin, turns out to be a life-changing event, as they both become involved in a very mysterious phenomenon, that only occurs once every year and takes who or whatever is in its path back to another place in time.

She is taken to the 17th century, where she finds Robert, another victim of the strange mist that appears only at certain times. Though afraid and confused, she takes the situation in her stride and eventually realises that life in the 17th century is far better than her life in 2015.