Dominic and Daphne met in their first week of college, and they've been happily married for three years. They love each other deeply but perhaps have become too comfortable, and their sex life isn't what anyone would call thrilling. So, on New Year's Day, Dominic blurts out a suggestion before it's fully worked out in his mind: what if they open up their marriage?

Daphne agrees--with conditions. They can sleep with one other person, one night a year, and the agreement has a five-year expiration date. It's not a total free-for-all on their vows, but an amendment. They call it the Freedom Clause.

It isn't long before Daphne and Dominic find themselves--and their marriage--altered in unexpected ways. Embracing the spirit of the Clause, Daphne pushes herself to be more assertive in asking for what she wants. She begins chronicling her journey of self-discovery in an anonymous newsletter, sharing recipes inspired by her conquests, and soon realizes that one night off a year isn't a small change . . . it's a seismic one.

Eventually, Daphne and Dominic are reconsidering everything--each other, their relationship, and themselves. Can they survive the Freedom Clause? Do they even want to?