Drama series in which people all over the world deal with their newly discovered superpowers. Hoping to find a way to stop Arthur, Hiro and Claire band together and travel 16 years back in time to when Kaito gave baby Claire to H.R.G. Meanwhile, Peter and the Haitian team up to finish off Arthur Petrelli for good but are interrupted by Sylar. Elsewhere in the lab, Suresh has a major breakthrough with the formula that will likely change everything.