Noah’s life hangs by a thread. Peter and the others must try to save Emma and stop Samuel as he prepares to take thousands of lives.

Based on Emma’s vision, Peter goes to save Sylar and Lauren goes after Samuel.

Matt is visited by the new and different Sylar. Emma is warned about Samuel by Peter.

In the mean time Noah devises a plan for Samuel’s capture by infiltrating the carnival.

Claire is visited by Sylar and Hiro’s past decisions subconsciously manifest because of his brain tumor.

Samuel makes an attempt to impress Vanessa who is his long-lost love but nothing goes according to the script for …

Attempts to save Suresh are made by Hiro and Ando while Bennet is on a mission to expose Samuels’ weaknesses in his effort to defeat the leader of the carnival.

Sylar is restored and seeks out the carnival to get new powers. But instead discovers a new weakness.

Claire and Peter try to resolve their emotions as Nathan’s awake. Noah and Lauren try to find everything …

Samuel’s secret agenda is suspected by Claire as she joins the carnival. Hiro returns and finds his buddy Ando, but has communication problems because of his disoriented state.

Emma is being searched by Samuel to help …

Visitors came to visit Noah unexpectedly. Clair decides to eventually visits the carnival and arrives on site. The plan of Samuel develops.

Meanwhile Sylar meets up with Peter face to face. Peter is bent …

A thanksgiving dinner was celebrated at Noah house. Petrellis came in, unexpectedly but was nevertheless welcomed.

Later, the carnival secrets unfolds, and Lydia is out to discover the mystery behind it.

Sylar dominates Matt, but he fights against it, he tries to go against it.

Samuel finds out he can already use his full power and make of it, and he was powerful!

Claire does her best to see who the attacker of Annie and Gretchen is as they were already attacked by unknown group of girls. She thought it might one of those sorority groups going against …