When her best friend asks Stephanie to pick up her son after school, she happily says yes. Her son, Miles, and Emily's Nick are classmates and best friends. A widow and stay-at-home mommy blogger living in woodsy suburban Connecticut, Stephanie knows that Emily, a PR executive, has a job in Manhattan that demands much of her time. But Emily doesn't come back. Stephanie reaches out to Emily's husband, the handsome, reticent Sean, offering emotional support. When they receive news that Emily is dead, Stephanie begins to see that nothing is as simple as it seems.