Nyssa is deathly ill and the doctor takes her to get help from her own people 3000 years before the Master blows it up. Sam loves all things Nyssa. Karen spoils 30 year old episodes of Doctor Who including Timeflight, Terminus, The Black Orchid, & Keeper of Traken with some not so oblique references to Kinda. Yeah it's a Peter Davison ep, what did you expect? Nyssa in a bikini?