His future will be her past, three days at a time...

Once every nine years, Chase Matthews and Patricia Wellesley find themselves compelled to step out of their normal lives and into each other's for three days of passion, desire, and curiosity at the strange phenomenon that binds them together. Outside of those three days, each has a normal life: a career, a family, love, loss, trials and triumphs, yet the universe seems determined to conceal them from one another.

Neither understands what is happening, only that as one of them moves forward through time, growing nine years older, the other moves backward, somehow becoming nine years younger, forcing them to question the potential pitfalls of revealing each other's futures—futures that might not be set in stone, but could potentially cause the collapse of reality itself if the unknown rules they are bound by are broken.