Cara, the third regeneration of the Time Lord called "Neas," brings her young companions Gumball and Darwin Watterson to 1982 Antarctica where they discover a disturbing alien parasite capable of mimicking whatever form it takes hold of. Trapped in an American research base with a group of men whose paranoia increases as the parasite mimics more of their team, Cara, Gumball, and Darwin are faced with choice of staying to help defeat the "thing from another world" or leave the dimension while they still have their bodies!