With their ten-month-old daughter in tow, Amy and Mark are ready for their first, much-anticipated backcountry hiking adventure. But their carefully planned journey turns into a nightmare when they encounter a dangerous bear. As the huge predator stalks their small family, tensions mount and tempers flare. Soon Amy is forced to come to terms with the truth: that she has lost sight of who she is, and that her partner is not the man she believed he was.