Big Finish travel back to Doctor Who of the 1970s, recreating the era for two all-new third Doctor stories. In The Transcendence of Ephros," the Doctor and Jo arrive on the dying planet Ephros, where Galactux Power Inc is exploiting the world's remaining resources. But something stirs beneath the surface. Then, in "The Hidden Realm," the Doctor and Jo journey to Bramfield New Town when the husband of Jo's cousin vanishes mysteriously. As magpies circle overheard, the Doctor discovers a terrifying alien plot.