Facing a crisis involving her son Micah, a distraught Niki reveals her recent personal struggles to a friend. Pushing aside his own issues at home, Matt assists Audrey's investigation into another bizarre murder, but their pursuit of mysterious serial killer Sylar takes an unexpected turn. After failing to act like a "superhero" when faced with danger, Hiro questions his heroism. Nathan and his wife Heidi strategize how to win the congressional election. Claire is shocked to learn where her missing tape wound up.

Meanwhile, her father is disturbed by news from one of his associates.

Back in India to mourn the passing of his father, Suresh encounters mysterious dreams of the past that force him to question what path to take next. Continuing their journey to New York, Hiro and Ando stop at a diner and meet someone interesting. In crisis, Niki comes to a personal understanding. Determined to see one of Isaac's paintings that Simone recently sold, Peter asks Nathan for help in finding a key to the future. Intent on getting back to her normal life, Claire focuses on Homecoming preparations, unaware of what's to come.

Meanwhile, Mr. Bennett and a surprising associate focus their attentions on another "hero."

As Mr. Bennet tries to protect his daughter by any means, Claire's high school Homecoming celebration turns into a frightening night for many. Nathan and Simone work together to find Isaac's painting for Peter, but this key to the future could lead to tragedy.

Meanwhile, Hiro travels back in time to right an upsetting wrong. As Niki puts a goal in sight, Micah spends time with his dad. Still experiencing strange dreams while in India, Suresh learns of a boy that might pull him back into his father's research

As the clock turns back six months for all of the "Heroes," Mohinder's father Chandra Suresh arrives in New York to begin his quest to find individuals with extraordinary abilities, and meets someone all to eager to be special. Peter celebrates his graduation from nursing school, and learns that Nathan plans to prosecute a case that could mean trouble for the entire Petrelli family. A surprise visit from her father brings out the worst in Niki. Hiro attempts to be a hero and change the future for someone important. Claire joins the cheerleading squad and makes a curious discovery. Mr. Bennet and the Haitian meet someone special.

Hiro continues to search for a sword while being chased by mysterious figures. An invisible man named Claude has something to teach one of the heroes. D.L. takes on new family responsibilities, and Matt opens up to his wife. H.R.G. continues to focus on the captive Sylar. Claire seeks out the Haitian and then her birth parents. Mohinder looks for those on the list, and receives a surprise visitor. A psychiatrist offers to help Niki.

Hiro deals with explaining his new heroic path in life to his ambitious sister and tycoon father. Niki has the chance to reunite with D.L and Micah. Claude's mentoring of Peter leads Peter to question those closest to him. Claire goes to a trailer park looking for her birth mother. Sylar wears a disguise and makes a move against HRG.

Matt enters the private security business and receives an objectionable client. Suresh finds another person on the list. As her home-life worsens, Claire strives to learn more about her birth parents. Hiro and Ando get sidetracked in Vegas again while searching for the sword. Nathan is forced to deal with a secret from his past. Still indebted to Mr. Linderman, Jessica resorts to unsavory methods that could spell doom for a fellow hero.