Having fled their house in Bristol, Mitchell, George, and Nina relocate to Wales. Mitchell attempts to rescue Annie from Purgatory, where he is forced to revisit crime scenes from his past. He may be able to get Annie back, but on one condition with great consequences.
Back in Barry, George is arrested minutes before the full moon. Nina rescues him from the police station, but they are forced to transform together. Will they survive a night as werewolves without tearing each other apart?