A group of former Navy SEALs, trained by Sam, carry out a hit on a drug dealer. The OSP team investigate the double-crossing and find out that it might run much deeper than they first thought.
A remotely piloted aircraft and a Hellfire missile go missing during a military training exercise. The OSP team enter the shady hacker world in order to attempt to retrieve the equipment before the enemy does.
The team search the jungle for the missing witness in a high-profile murder case, and strives to find her before the assassins can.
A national tragedy forces Olivia to return to work at the White House. Meanwhile, we learn more about the first few days of Fitz's presidency.
Mulder uncovers more clues about a government cover-up involving an alien entity and a sunken WWII aircraft. Scully pursues the man who murdered her sister.