Buttoned-up financial consultant Grace Song lives life by her own strict rules. Spontaneity leads to chaos. Always play it safe. So when she shares a Manhattan cab with a handsome stranger and they accidentally swap cell phones, her first instinct is to track him down and put things right. Stay on track. Stick with the plan. But when beyond-gorgeous Zack Camden answers the door draped only in a towel, Grace is suddenly inspired to ditch her rules for a day...and a night.

Indulging in one delicious encounter with a perfect stranger is just the break she needs. But one turns into two, then three mind-blowing nights - and soon Grace is in danger of breaking the biggest rule of them all - never fall in love....