From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has any connection to Navy and Marine Corps personnel, regardless of rank or position.

When Buy More computer geek Chuck Bartowski unwittingly downloads a database of government information and deadly fighting skills into his head, he becomes the CIA's most vital secret. This sets Chuck on a path to become a full-fledged spy.

After losing their dad as kids, the 3 Mann boys return to the family cabin every year to remember him, but when they walk in on their mom with a secret fiance, their trip becomes a wild test to see if he's Mann enough to join the family.