Hiro and Ando have landed themselves 5 years into the future. The bomb has taken place and "heroes" are now being killed. Nathan is the president, Matt works for Homeland Security, Mohinder is the president's chief advisor, Peter and Niki are married, and Hiro is trying to figure out how to stop the bomb still. Claire is working at a diner in Texas and wants to get married to the owner. Peter is the one who exploded but everyone else thinks it's Sylar. Sylar is actually disguised as Nathan, who died. He wants to kill all the heroes. Ando finds out that he died in the bomb. Claire, The Haitian, Mr. Bennet, and future Hiro all die.
This was a great episode! It was very interesting, but very depressing. This episode gets a 9.5 out of 10!