Following the showdown against Arthur, Nathan and Peter find themselves pitted against one another, and Nathan makes a decision that will have an effect on the entire world. Meanwhile, Sylar…

In order to stop Arthur, Hiro and Clair team up and travel back in time to when Kaito gave Claire to H.R.G. Meanwhile, Peter and the Haitian head out to…

After a schoolmate claims to be an alien and proves it by using heat vision, Clark investigates and believes the boy is from Krypton. Meanwhile, Helen confronts Lex over the…