Supergirl and Starfire find themselves weakened by a mysterious villainess, who wields a crystal composed of elements from both of their home worlds. Almost instantly the two heroines are too weak to fight back, and the villainess has her horny way with them! The good girls are fondled, groped, licked, spanked, stripped, and made to cum from the effects of the crystal! Supergirl and Starfire, two of the most powerful heroines in the universe, find themselves completely dominated!