The Doctor and Romana arrive on the marsh moon of Delta Magna in search of the next segment of the Key to Time. They are caught in the conflict between the native Swampies and the crew of a chemical refinery. The presence of a gun runner complicates matters; to make things worse, the Swampies intend to awaken Kroll, the giant god that lives beneath the swamps.
"James Compton is paid by wealthy Howard Townsend to photograph his mistress Simone . Intimate photo sessions lead to an affair. Simone is kidnapped and he is being blackmailed over the affair by the kidnappers. Some violent scenes."
Durante a Segunda Guerra Mundial, um navio alemão afunda um navio inglês e traz os sobreviventes para bordo. Depois de uma curva errada, o submarino os leva à terra desconhecida de Caprona, onde encontram dinossauros e neandertais.
