Butcher Caleb Sullivan saves a pregnant sow and takes in Willow. A plague breaks out. Greedy merchant Quentin Sterling profits. The sow appears, leading them to Forsythia, the cure. Caleb and Willow distribute medicine for free, cutting off Sterling's profit. Sterling conspires with Wyatt King to frame them. The sow protects them, exposing the conspiracy. Villains punished, plague subsides. The sow was an immortal. The Sullivan family never slaughters pregnant livestock, passing down this story.