After the sudden death of their parents, the MacAllister children return to the run-down summer camp where they spent their childhood. The four sisters and their elder brother haven't all been together at Camp Macaw in over twenty years--ever since a tragic and mysterious accident. Over the course of the Labour Day weekend, the siblings must determine what to do with the property, now worth millions. But a stunning condition of their father's will compels them to face their past--and come to a decision that threatens to tear them apart forever.