Pete finds Clark's spaceship, forcing Clark to reveal his secret to his best friend. Dr. Hamilton is plagued by kryptonite-fueled illness and focuses on Pete. Meanwhile, Lana has to deal with Nell and her plans to remarry while Lex and Lionel adjust to life together.
Deadly rain in a migrant workers camp points Mulder and Scully to the trail of a mythical beast; guests Ruben Blades, Raymond Cruz.
After tracking a lead to a hostile and heavily guarded location, the team are reunited with Phillip Broyles. However, can he be trusted?
The Observers and the team engage in a battle in the year 2036.
While Walter takes an LSD-laced trip down memory lane, a mysterious signal leads Peter and Olivia to the woods.