Hiro and Ando's determination to save the world gets a test; Nathan takes surprising steps to guarantee his election; Thompson (Eric Roberts) brings someone new into his company's fold.
Nathan considers the cost of his election to Congress to those he loves; Hiro learns the truth of his lineage from his father (George Takei); Peter and Ted try to leave New York before the explosion.
A restored Sylar seeks out the carnival to obtain a new batch of powers; discovers a new weakness.