Talia Stevens is a genetic researcher who's orderly life doesn't leave much room for romance. She fills her days trying to find the disease responsible for her mother's death and caring for a father who always puts his work first. Arin McClintock is on a mission from the future, sent back in time to establish contact with the scientist who invented time-travel. He is a man determined to maintain the self-control and discipline he has taught himself to use in all aspects of his life. Yet, from the moment they meet, sparks fly and Arin and Talia's lives are turned upside down. Talia reluctantly teams up with Arin, so that they can find out who is trying to alter events in time, at the expense of more and more lives. As they travel between the present and future, and with the help of a very nosy computer named Esmerelda, Talia and Arin find their attraction to each other can't be denied. As danger and intrigue swirls around them, they wonder if their love can truly withstand the test of time.