Bugs really freak me out so I had problems watching it. Really material for throwing up! Sam and dean go and research strange deaths of people in The town of Oasis Plains. Bugs ate them. They meet a boy, Matt, who's very interested in bugs. He takes them to woods and Dean finds a skull in the middle of a pool of worms. They visit native Americans. An indian tells them the story that his fathers told him. Six days white people were killing indians and on the sixth night everyone was dead. The same happens now. Deadn and Sam must prevent what could happen.
We also find out what was the reason Sam left home and went to university.