Mona Gray is a 20-year-old loner who, as a child, turned to math for salvation after her father became ill. As an adult, Mona now teaches the subject and must help her students through their own crises.

While on a trip to Thailand, a successful American businessman tries to radically change his life. Back in New York, his wife and daughter find their relationship with their live-in Filipino maid changing around them. At the same time, in the Philippines, the maid’s family struggles to deal with her absence.

Margot and her son Claude decide to visit her sister Pauline after she announces that she is getting married to less-than-impressive Malcolm. In short order, the storm the sisters create leaves behind a mess of thrashed relationships and exposed family secrets.