After a preemptive strike against Hiro (Masi Oka) and Ando (James Kyson Lee) in Africa, Arthur Petrelli (guest star Robert Forster) orders Knox (guest star Jamie Hector) and Flint (Blake Shields) to hunt down his son Peter (Milo Ventimiglia) and granddaughter Claire. Nathan (Adrian Pasdar) is stunned to learn his father is alive — and leading a villainous charge to worldwide destruction. Meanwhile, back at Pinehearst, Sylar (Zachary Quinto) has a charged confrontation with Elle (guest star Kristen Bell). Suresh (Sendhil Ramamurthy) begins testing his new, combined superpower formula. Later, with the others dead, injured or on the run, Matt (Greg Grunberg) attempts to wake Angela (Cristine Rose).
To prepare for an eventual showdown with his foes, Hiro investigates defining moments in the pasts of Arthur Petrelli, Sylar, and Flint. He discoveres that Meridith Gordon is Flint’s older sister, and Arthur Petreli ordered Linderman to kill Nathan, but ended up injuring his wife, Heidi, and that Arthur survived his supposedly fatal heart attack.
“Eris Quod Sum”
Having become monstrous, Mohinder attacks Nathan and Tracy, who try to save Maya and other subjects. Elle surprises the Bennet family. Angela tries to convince Sylar to save Peter from Pinehearst. Daphne is ordered to kill Matt for not joining the villains. Hiro doubts Usutu’s advice on how to handle his opponents
“Dying of the Light”
Hiro and others accept offers to join Pinehearst Industries. After the Company is paralyzed, Peter goes to Pinehearst, its rival, for information. Claire and Sandra try to save Meredith from Doyle, one of the escaped villains. Nathan and Tracy come to Mohinder to learn where their abilities came from
Claire faces Stephen Canfield, an escaped villain that can create vortices. Peter has returned from the future, which he discovers has affected him deeply. After Adam is unhelpful in finding the formula, Hiro tries to befriend Daphne and Knox. Mohinder puts Maya in a bad situation while trying to correct errors in his research. Linderman tells Nathan to stay with Tracy, so that they can make great accomplishments
Future Claire hunts down Peter (who obtains a dangerous ability) in order to save the world. Tracy finds out about her origins while Mohinder learns more about his power. Hiro and Ando try to break out of the Company’s prison, and have to dig Adam back up
Bennet and his new partner go after four villains at a bank heist. Peter tries to determine what goes wrong in the future. Hiro and Ando meet the Haitian in Germany. Tracy Strauss looks for information about Niki
Sylar confronts Elle at the Company and twelve villains escape due to an ensuing battle. Meanwhile, Claire finds out more about her ability and Ando travels with Hiro to Paris in pursuit of a speedster named Daphne.
While Matt discovers the identity of the person who shot Nathan, Sylar seeks Claire to help restore his abilities and Hiro learns of a secret about the Nakamura family that could have dire consequences on the world