Hynek and Quinn follow General Harding to Roswell, New Mexico, where an anonymous townsperson has threatened to expose evidence to the world of an extraterrestrial crash-landing six years ago.

Hynek and Quinn investigate reports of a soldier who was allegedly taken inside a flying saucer at a remote military base in Nevada, where they subsequently learn about the several reasons why the secrets contained in Area 51 should not be released.

A supposed alien invades a rural home in Kentucky, which prompts the CIA to give Hynek and Quinn access to their top-secret program known as MK Ultra, which asserts that the alien attack has the potential to be the beginning of a larger plan.

Hynek and Quinn head to a Utah ranch to investigate a young family’s claims of unexplainable and dangerous phenomena.