The fairytale Napa is the perfect place for a bachelorette party, where the bride's friends are looking for adventure and unforgettable emotions. But instead of fun, a night of horror awaits them: the celebration turns into a bloody trap when a mysterious stranger appears in the darkness in a wolf mask. The shadow of an ancient tragedy overshadows the company, forcing each of the girls to fight not only for their lives, but also with the ghosts of the past. The trials they go through reveal the depths of betrayal, pain and the thirst for revenge. But will they have enough strength to learn the truth - and survive?