Pitched into the middle of a conflict between the mining company extracting dreamstone and ecological protesters, Sam thinks it's easy to decide who the good guys are - until people start dying, and the killers seem to be the same species as some of her new friends.
Meanwhile, the Doctor has tracked Sam down, but before he can reach her he's co-opted by the Dreamstone Mining Company and their sinister military advisers. Suddenly, it's war - and the Doctor is forced to fight against what he believes in. He alone suspects that dreamstone isn't what it appearsto be. But nobody's listening - and nobody could dream who the real enemy is...