On an island off the coast of Maine, the Miller family reunites to celebrate the father's seventy-fifth birthday. Each of the adult children is expecting a first child, and at the same time each is at a major crossroads in life. The eldest, Daniel, still reeling from a car accident that has left him a paraplegic, is also grappling with the fact that his wife had to be artificially inseminated. Jake, the middle child, discovers that his wife is carrying twins after many trying years of fertility treatments. Hilary - the free-spirited youngest daughter - arrives in Maine five months pregnant with no identifiable father in sight. As the family gathers, something shattering happens from which no one will emerge the same. The Birthdays deftly explores the myriad ways of seeking sustenance after disappointment or loss.