The theory of happily ever after

Happiness expert Maggie Maguire's friends, worried about her after her fiancé leaves her, get her a job as a speaker on a singles cruise in the Gulf of Mexico, where she clashes with a handsome passenger who criticizes her work. When her fiancé dumps Dr. Maggie Maguire for an acrobat, the breakup sends Maggie spiraling into an extended ice cream-fueled chick flick binge. Her friends book her as a speaker on a "New Year, New You" cruise in the Gulf of Mexico. When a stranger on board insists that smart women can't ever be happy, Maggie sets out to prove him wrong. Along the way she discovers that happiness has far less to do with the head than with the heart-- and sometimes happiness is already out there searching for you.