An entity known as the Shadow stepped from the Marvel Universe to the Doctor Who Universe. He had waited long enough. It was time to play with the Doctor.
The Doctor, Amy Pond, and Rory Williams saw a magnificent sight. As a shower of meteorites flew over London, rainbows formed that spelt the words Bad Wolf. The Doctor recoiled. As Amy asked what was wrong, a smile followed the message and everyone heard, "Just kidding."
The Doctor was looking at Martha Jones. He and Martha were discussing were to go next when a form appeared in the TARDIS.
"Why hello, my dear Doctor." Captain Jack Harkness greeted.