Electing to raise her infant sister when her parents are killed on her wedding day, Annie finds her intimate friendships with Jake and Mason tested until a fateful night during which the three companions goad each other into crossing a dangerous line.
Friends since earliest childhood, Annie, Jake, and Mason have a special bond. When Annie's parents die on the same night that she and Mason get married, the three friends decide to raise Annie's infant sister, Opal, together. But their bonds of intimacy, already entangled, become dangerously close, on the line. One fateful night, the three friends goad one another into crossing that line with shocking consequences.