Okay, this is a comprehensive list of everything that needs to happen to make Heroes as awesome as it was in Season 1.
* Replace Claire with Buffy the vampire slayer. Her new goal is to slay evil vampires while keeping her powers hidden.
* Sylar realizes he cannot reenter his old body. Instead he uses Parkman's extreme mind manipulation powers to create a Dollhouse. He starts slowly forming an army of mind-controlled villians/dolls, however they need to sustain themselves on human blood to survive. Aka vampires. Eliza Dushku guest stars as a doll AND a vampire slayer.
* Replace Hiro with Chrono. Chrono must go back in time with a group of friends to kill a huge demon named Lavos that lives inside the Earth. Lavos is planning to erupt from the Earth in the future to harvest the 10 Billion people on the planet as livestock.
* Replace Peter with Dr. House. Replace the deaf woman with Elliot Reed. Together they solve medical mysteries and learn life lessons! Hilarity ensues!
* Fifty years in the future, Micah accidentally creates the terminator virus. Tracy suddenly remembers that she was a water-based terminator sent to the past to stop this. The group must fight back the killer robots. Arnold S. guest stars as Tracy's father from the past/future.
Epic Climax:
* Hiro/Chrono learns that Lavos is actually the remnant of Sylar's old body. It had gone on a power eating rampage and after becoming super powerful eventually ended up in prehistoric times somehow, where it waits millions of years to consume all of humanity.
* Micah learns the evil robot virus is actually Sylar's soul imprinted into the computers.
* Chrono/Hiro realizes the only way to destroy Sylar permanently is to defeat his body, mind, and soul all at the same time, hundreds of years apart. He sends a time-message to Buffy and Micah's crews, and they all enter a freaking epic battle against Sylar's 3 fragments.