Ron Larsen started as an unassuming teenager with no more ambition than winning a little extra cash playing chess when he met a beautiful, eccentric physicist, Regina Russo, with whom he falls in love. Eventually she becomes his mentor and launches him into a journey of discovery of what time is—and what it is not. As they plunge into experiments too dangerous to be revealed, they find themselves trapped between unquenchable curiosity and the fear of being discovered. Forced into secrecy, they battle a rogue FBI agent who is convinced they are terrorists. Ultimately, Ron realizes he has become enmeshed inside the very mathematical equations he has sought to solve.