A lifetime of friendship begins the day brothers Ed and Allard save Sarah from drowning in an icy river near their rural New Hampshire home. Though their paths diverge through the years, the connection between the three endures until a heartbreaking tragedy in the remote mountains of Wyoming forces Sarah and Allard to confront the unthinkable. In their grief, they find themselves on separate journeys that test the enduring bonds of their relationship and time’s unremitting power to heal.