They go to the south pole (or north pole), and there are some people there and some people go away from the research station to investigate but the woman goes crazy and shoots the man (which survives I believe) and than she takes the snowscooter to the research station and when she arrives she's unconsious. Then the daughter of the man finds her and they bring her back inside but there comes some brown stuff out of the woman's month and she dies. I didn't watch further..