When a mysterious rival uses a time machine to frame famous Edwardian-era Detective William Murdoch of a murder he didn't commit, Macy and her friends travel back to 1910 to determine the real perpetrator of the crime. But if you thought solving a regular murder mystery was difficult, imagine doing so undercover, in a time that isn't your own, and without the aid of modern technology. To make matters worse, if Macy doesn't succeed in exonerating Detective Murdoch, she faces a terrible fate - being erased from the future!
The series stars Jennette McCurdy as Wiley Day, a pregnant teenage daughter of a minister living in the small town of Pretty Lake, which is coping with a mysterious disease which has killed everybody over the age of 21.