A widower struggling to raise his emotionally challenged son discovers that he can predict events before they happen.
When a man named Sean Walker (Jason Ritter) goes looking for his missing girlfriend Leila (Sarah Roemer), he stumbles upon a government conspiracy that is bigger than the president (Blair Underwood) himself.
Earth has its first encounter with an extraterrestrial race. Calling themselves the Visitors and promoting peace, they seem to be friendly, but their congeniality may be a cover for a malevolent agenda. Erica (Elizabeth Mitchell), an FBI agent, discovers a secret about the aliens that threatens the lives of Earthlings, including her teenage son, who sees them as a sign of hope. Meanwhile, Father Jack (Joel Gretsch), already questioning his faith when the Visitors arrive, seeks answers outside his church and finds other dissidents who believe the Vs are not what they claim to be. The ABC series is billed as a reimagining of a 1980s miniseries by the same name.
The FBI teams up with a formerly-institutionalized scientist - who was performing experiments on the fringe of real science - and his son to investigate weird crimes that are seemingly part of a larger pattern, and may be connected with a global company called Massive Dynamic.
People all over the U.S start to realize they have special abilities, like telekinesis, healing abilities, flying powers, time travel, invisibility, and the ability to absorb other's abilities. One man, known as Sylar, wants to gain all the power of these "heroes" so he can be the most powerful and evolved human of all, and stops at nothing to gruesomely kill these people. In order to protect themselves from him, these people must help one another before Sylar can destroy them all, while they each deal with problems of their own.
What appears to be a comet slows, hovers and stops, then bursts forth to reveal 4,400 people who were presumed dead or missing over the past 50 years. They look exactly the same as the moment they disappeared, but some of the returnees now have special powers. After one of the 4,400 commits a murder, a special division of the Homeland Security Department is formed to monitor them.
Two FBI agents, Fox Mulder and Dana Scully work in an unassigned detail of the burea called the X-Files investigating cases dealing with unexplained paranormal phenomena. Mulder, a true believer, and Scully, a skeptic, perceive their cases from stand points of science and the paranormal.