“The Last of the Gaderene” by Mark Gatiss (2000) — Doctor Who
Synopsis
Something mysterious is happening with mysterious people mysteriously at a nearby abandoned airfield, which is the cover for an impending alien invasion. Already the aliens have taken possession of several Very Important People at the Defense Ministry to smooth other everything and are hunting for the Lost MacGuffin in order to begin the invasion. Fortunately someone was old friends with the Brigadier and knew just how to bypass security to contact him directly. The Brig, of course, sends the Doctor, after he gets back from a little side trip that has nothing to do with the main story, and soon everything turns into (pseudo) Zombie Apocalypse! with villagers getting implanted with alien embryos to control them to hold off the UNIT troops until the actual invasion begins. All is saved when a WW II Spitfire airplane dives into the teleportation beam and halts the invasion permanently.
