Whilst the second Doctor (Patrick Troughton) is off on holiday he encounters cruel alien race determined to spoil his holiday. Originally broadcasted in five weekly parts from August 10 to September 7, 1968. Now you can view the entire mini-series in one go!

The Doctor is holidaying on planet Dulkis when the self-acclaimed masters of ten galaxies, the Dominators arrive to cause havoc. Supported by their robot servants, the Quarks, The Dominators quickly enslave the peaceful Dulcian inhabitants. However a few determined Dulcian rebels break from their pacifistic ways and join forces with the Doctor to help oust the Dominators before they turn the planet to a mass of radioactive material, which would help to fuel the Dominator’s invasion to Earth.

Find out more on the BBC’s mini-site