As The Doctor and Firefly find themselves on a colony planet called Laughterra, they find the place is happy. A little too happy.
Happiness is required by law, and any and all so-called 'killjoys' are wanted criminals. It's left up to our heroes to bring an end to Madame Surprise's regime, and face off with her mysterious servant, the Kandykolt.
A ponyfication of one of the Seventh Doctor's strangest adventures.