The Box of mysteries and secrets
The Pandorica is a Fairy Tale about a Box of which contains the most feared being in the Whole Universe which is The Doctor. The Deadlyiest Monsters ganged up as they formed an Alliance to put him inside it. The Pandorica was hidden under Stonehenge as a Cyberman was guarding it until it got Chopped Up by a Celt. When thousands of ships came the monsters teleported down to the Pandorica. The Doctor was shocked the monsters that came down were Daleks, Cybermen, Sontarans, Judoon, Silurians, Sycorax, Weevils, Roboforms, Uvodni and the Autons. There were more but they stayed in their Ships or Battle Stations. They had dragged the Doctor in the Pandorica. When Auton Rory shot Amy the Doctor appeared but he was the future one. Then the real Doctor appeared. He and Auton Rory put an almost Dead Amy Pond inside it for 2000 Years. Rory guarded it until it was at a Museum with 2 Stone Daleks from the Pandorica.
It had appeared in Series 5: The Pandorica Opens and The Big Bang.