This is Doctor Who's first exciting adventure with the Daleks! Ian Chesterton and Barbara Wright travel with the mysterious Doctor Who and his granddaughter, Susan, to the planet of Skaro in the space-time machine, the TARDIS. There they strive to save the peace-loving Thals from the evil intentions of the hideous Daleks. Can they succeed? And, what is more important, will they ever see their native Earth again?