Having escaped the initial onslaught of Grounders and torture at Mount Weather, Alex is now home and safe with the ones she loves and she's a new woman, however, not in a great way. The terrors of the past year haunt Alex and the guilt of events that had occurred swallows her into depression, leaving Bellamy and her family to try and help put her back together, but when there's a new and dangerous leader on the rise, she might have to push aside her own well being to protect her people and human kind itself.