Frontios is a good story with a number of interesting elements. The Tardis having drifted to far into the future is forced to land on the Planet of Frontios, one of the last Human settlements, they have been fighting a war with an unknown enemy for many years and believe the Doctor and his companions (Tegan/Turlough) to be that enemy at first.
Frontios works well for many reasons, The Doctor (always played well by Peter Davison) has to cope without the TARDIS as a means for escape. Turlough gets some more depth to his character, when it is revealed that he has met the enemy before. Which leads to some nice OTT acting not seen since Enlightenment. Even the soundtrack is different then the usual 80s style. In fact a lot of style visually has gone into making Frontios different, even the ending of episode 4 is really a cliffhanger for the Ressurection of the Daleks. However, the final representation of the Tractators is disappointing.
With Awakening being released in the Earth Story box set the follwoing month, this is penultimate Davison story, and in my opinion always worth the money.
One question though? Who thinks Kamelion is the Hat Stand???