It was December 20. Winter Break was coming. The ponies were still working on their winter test. Twilight was too busy thinking about winter and snow, that she found it difficult to concentrate on her assignment. The test was finished. "Oh, my Celestia!" Twilight exclaimed, as she was looking at an email during a rest period. At first, Fluttershy was confused, but then she read the message. It was from some random pony named 'I Just Planted The Time Bomb'. She gasped lightly, then started mumbling. "What the hay is she sayin'?" Applejack asked. "That guy DID plant the time bomb! He'll destroy Equestria in 4 days, 10 hours, 18 minutes, and 45 seconds!" Rainbow Dash read. "OH, NO!" Rarity yelled. "That's Hearth's Warming midnight! What are we going to do?" Twilight was thinking. She had an idea…