A father and daughter seem to have a shared trauma. One day, The Father puts on a collar shirt goes away on what seems to be a business trip leaving The Daughter at home to snoop around his computer.

In Host, Missouri, the newcomer vet, Dr Eli Rudkus, is called by a farmer to look at one of his cows. The vet finds a strange parasite in the animal and sends it to the agriculture lab to be ...