Terminator The Sarah Connor Chronicles S02E02

A man is sent from the future to warn the Connors about Skynet's plan.John goes back to school and makes friends with Riley. Sarah and Cameron infiltrate into a nuclear power plant to stop Terminator from destroying it, and Sarah is contaminated in the process. Warned by Ellison, Charley and his wife evacuate from their home, lest the terminator finds them. At the end, Sarah finds a string of names written in blood by the man who previously warned them.