Tonton Streaming He-Man and the Masters of the Universe (1983) S1E35 - Ordeal in the Darklands

Evil-Lyn captures Mira, the daughter of the powerful wizard Kor, and frames He-Man and Man-At-Arms for the capture. Kor takes He-Man and Man-At-Arms prisoner, and refuses to listen to their pleas for innocence, planning to unleash a demonic entity called the Crimson Scourge upon them unless they reveal his daughter's whereabouts.