Driving home after a bad day, Danielle "Dan" Lent is transported from her car into a subterranean laboratory. Confused and disoriented, she has no choice but to trust the stranger Ric, who claims to be a time agent. He recruits Dan to investigate illegal time travel. However, Dan finds herself caught in a loop of time switches, thrown back and forth between the lab and a rainy parking lot where a stray border collie offers her company. Desperate to find a way home, Dan tries to figure out why she has become the pawn of criminal forces-and why her name and scientific work seem to be so important a few centuries down the line. With the help of Ric and her new dog friend, Dan sets out to untangle the twisted timelines. In a race against time, she is risking everything she has-her life, love, and future.