Sat, Jan 19, 1974
The Doctor and Sarah returns to present-day Earth, where they find London has been evacuated, and Dinosaurs are on the loose and they are mistaken for looters. Assisting U.N.I.T in the emergency, The Doctor and Sarah discovers corrupt politician Sir Charles Grover MP, renegade scientists Butler and Professor Whitaker and military officer General Finch are using a time machine to bring the dinosaurs from the past to the present as part of they scheme to bring the human race back to a "Golden Age" before the world was polluted.
Sat, Feb 23, 1974
As the TARDIS heads to the paradise planet Florana where the Doctor and Sarah go for a holiday, the TARDIS goes off-course and arrives on the barren planet Exxilon, where the TARDIS is losing power. The Doctor and Sarah finds a group of humans and Daleks are searching for parrinium, a mineral which is the only antidote to a space plague. Both parties encounter the native people and trouble ensues. In an attempt to find what caused the power loss, the Doctor, chased by the Daleks, enters the Exxilon's lost city to stop the power-draining phenomenon.
Sat, Mar 23, 1974
Returning to the medieval planet Peladon (50 years after "The Curse of Peladon") The Doctor and Sarah find King Peladon's daughter Queen Thalira has inherited the throne and the galactic Federation is at war with Galaxy Five and The Federation requires the mineral Trisilicate that will end the war. However, the miners led by the mad rebel Ettis are rebelling and refusing to work, as the ghost of the loyal beast Aggedor is frightening and killing off the miners. It is soon discovered that the ghost of Aggedor is a holographic projection and the culprits are a task-force of renegade Ice Warriors led by Commander Azaxyr and traitorous federation mining engineer Eckersley who have betrayed the Federation to Galaxy Five.