Claire (Hayden Panettiere) struggles with adjusting to her new life in college when a mysterious death thrusts her into the spotlight once again. Elsewhere, Hiro (Masi Oka) and Ando (James Kyson Lee) continue their noble quest to help people by promoting their abilities. Angela (Cristine Rose) fears Nathan (Adrian Pasdar) will soon discover his true identity; while Matt (Greg Grunberg) is haunted by an unexpected visitor seeking something he has lost. Tracy Strauss (Ali Larter) and H.R.G. (Jack Coleman) join forces, looking for the key to unlock the motive behind a horrific crime. Meanwhile, Peter (Milo Ventimiglia) uses his abilities for good, but he is soon called upon to aid an old friend. While the heroes adjust to their new surroundings, a mysterious carnival clan, led by ringleader Samuel (Robert Knepper), sets their sights on familiar faces. James Kyson Lee and Zachary Quinto also star. Rachel Melvin, Jimmy Jean-Louis, Ashley Crow, Lisa Lackey, Assaf Cohen, and Saemi Nakamura also guest star.