It's Mayday in a small town steeped in pagan traditions where the crowning of the May Queen is the highlight of the day until suddenly she goes missing.
As the townsfolk gather for the memorial, things take a dark turn and a chaotic interruption has fatal consequences. Steve finally gets his moment with Angie - will he manage to win his family back? Fiona must face her old colleagues in a way she never thought she would, Caitlin makes an eerie transformation, and Everett and Linus have a confrontation that takes their relationship to a new level.