Although awkward college student Todd Howard is particularly adept at science, he's paying for school with an athletic scholarship that he will lose should he not fare well in an upcoming boxing tournament. Luckily for Todd, he has inherited the same family curse that once turned his cousin into a werewolf. As he transforms into the hairy, fanged, howling monster, he finds both his physical agility and his popularity skyrocketing -- but at what cost?

Season 4 begins with our heroes putting their lives back together. Claire finds that her biggest challenge is forgetting her old life and starting college. Hiro Nakamura goes back to his old life in Japan, but discovers that he has a terminal illness and sets out to fulfill his own personal bucket-list. Peter Petrelli returns to work as an ordinary New York City EMT. H.R.G. is adjusting to life as a single man, but when Mohinder Suresh offers H.R.G. compelling evidence of a new danger, it makes H.R.G. wonder if he should get back in the game. Nathan Petrelli returns to the Senate and begins to notice strange changes in himself. Matt Parkman returns to life as an ordinary family man, but finds something unfamiliar buried deep within his psyche. And a strange and dangerous carnival comprised of a traveling band of outsiders with powerful abilities suddenly poses a grave challenge.

In season 3, a shocking revelation suddenly divides our heroes and, as a cadre of villains is unleashed upon the world, its Heroes are called to their greatest quest yet.

Season 2 introduces new stories — and new heroes — following the apocalyptic showdown in New York City. Claire has moved with her family to Southern California in order to hide her indestructible abilities and there she encounters a young man with a secret of his own. Matt gains new authority in tracking down a murderous force stalking the Heroes, while Suresh uncovers a virus that could eradicate them all. As each sensational chapter unfolds, there is no resisting the extraordinary.