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 nearly reach a potential culprit, which could take them to just where they need to be to discover the truth behind the famous Roswell incident.

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.

The mysterious Man in Black kidnaps Hynek, which sends Quinn on a mission with the CIA to follow him and rescue Hynek.

While reminiscing on the set of `Close Encounters of the Third Kind', Hynek recounts his experiences with the infamous Robertson Panel and the eccentric alien contactee for whom he put everything on the line.

When sensitive material is stolen from Generals Harding and Valentine, Hynek and Quinn realize that their culprit is far closer to home than they could imagine, but so is undeniable evidence of a UFO conspiracy.

When Hynek and Quinn track down a mysterious plane that has vanished in the Canadian wilderness, they must embark on a dangerous mission to recover its missing cargo.

Strange interlopers in the sky and sea, and the actions of a rogue admiral, threaten to turn a naval exercise into World War III. It's up to Hynek and Quinn to stop the rogue admiral.