What if you could go back in time and change the one thing you regret the most?

Gwen Waters gets the chance to find out when she's recruited into the time traveling black op run by the FBI. In the six years since the loss of her husband and infant daughter, Gwen has been in survival mode, trying to just get through every day, barely living. Then the Transtemporal Agency comes knocking, offering Gwen a second chance at a life, and the opportunity to do good in the world.

Gwen quickly discovers that time travel is dangerous and challenging. She feels the exhilaration of having a purpose again-- correcting rifts in the timeline. She also finds friends and support unlike she's ever experienced. Gwen starts to realize that she could actually be happy. Despite the magical new life she'd been handed, Gwen can't stop asking herself, what if her husband and daughter hadn't died? Is it worth giving up all she's gained to go back and undo the last six years? What will happen to the Transtemporal Agency if she decides to go back?