 After having a scary nightmare, Jason Teague is interned in Metropolis Health Center with risk of death. Clark Kent and Chloe Sullivan decide to investigate, and find that Jason had had a meeting at Luthor Corp. a couple of hours before. They go to the plant, and Chloe has the same trouble. Sooner, many dwellers of Smallville have the same mysterious disease, and Clark finds that it is caused by an experimental bacteria released from Luthor Corp. s laboratory after an explosion in the facility, and the team of scientists is working in an antidote. Meanwhile, Lionel Luthor is released from prison.