The Edwards, the Ames, the Epsteins, the Currans and the Templetons - five families bound together by the decades-old tradition of spending their August vacation at the idyllic Mount Haven Inn in New Hampshire.

Despite living separate, disparate lives, the summer ritual of reconnecting remains an important yearly fixture for the families, with the inn and its tranquil surroundings offering a welcome safe haven and respite from their struggles - a place to draw comfort from their shared past and memories. But strained relationships, heartache, loss and devastating secrets all come to a head one climactic summer - a summer that will change their lives forever …