After encountering a well near Castle Grayskull which he'd apparently never noticed before, He‑Man hears fighting and climbs down the well to investigate. He finds himself in a cavern and sees Teela battling Skeletor. It seems Skeletor has heard that there is underground access to Castle Grayskull, and is seeking entry via the caverns. Battle Cat finds Stratos and Man‑at‑Arms, who join the fray. Skeletor and his henchmen are beaten and the underground entrance to Castle Grayskull is permanently sealed.