Synopsis: When two schoolchildren in the British town of Blackcastle find a cute, fuzzy creature in a downed spacecraft, their first instinct is to help nurse the cuddly creature--called Beep the Meep--back to health.
As the kids are learning more about their furry new friend, the Doctor and K-9 materialize onboard an alien vessel descending upon Blackcastle. The ship is taking a group of militaristic personnel, calling themselves "the Wrath Warriors", directly to the Meep's crash site. Their intent: kill or capture the innocent-looking Beep. Their plan: turn the Doctor into a living bomb that they intend to detonate remotely!
Once planetside, the Doctor manages to save himself from being blown up. Beep notices his heroics and surmises that the explosion was really meant for him. He thus appeals to the Doctor for help escaping from the Wrath Warriors. At first the Doctor, having nearly been killed by the Warriors himself, listens. But when a pair of Warriors come down to finish the job that the Doctor foiled, Beep shows his “inner Meep”. He kills one of the two guards in cold blood and then purposes to use Doctor and the two school kids to help him escape—before he kills them!