World War Equus

Eighteen years had passed since Cozy Glow was imprisoned in Tartarus. Celestia and Luna had decided to start modernizing Equestria. Over the course of ten years, motorized vehicles were designed, tested, and mass produced. The last eight years encompassed soldiers being trained for combat on land, water, and in the air. Little did anyone know that the peace was about to be interrupted.

One summer evening in Canterlot, Celestia was doing some paperwork in her office when a guard knocked on the door.

"You may come in.", she responded as she finished signing off on a document.

The guard reported that a radio call had been received from Twilight.

"She needs to speak with you, Your Majesty. We have her on hold."

Celestia teleported to the communication room and put on her headset.

"What's going on Twilight?"

"Celestia, I was going back to my castle to turn in for the night when I saw something come swooping down from the sky uncontrollably and crash in the Everfree Forest. I radioed Luna to meet me for identification and we realized it was Discord. He's badly injured and fading fast. We have taken him to my castle and he has told us something startling. You might want to hear what he has to say."

Celestia wasted no time reaching Twilight's castle. Just inside the doors, Cadence and Flurry Heart were shuddering and chattering their teeth in nervousness. When she arrived the room where Discord was, she stumbled backwards upon seeing his injuries. He had a broken wing, two black eyes, and cuts and burns all over himself. He was also coughing up blood and having trouble speaking.

"Celestia, I have bad news for all of you. Emperor Grogar has returned from exile and has united King Sombra, Queen Chrysalis, Lord Tirek and Cozy Glow to destroy friendship completely. I tracked them down and discovered that they are planning to attack all over the globe, but they spotted me. I tried to get away, but they hit me hard. You must do everything in your power to defeat them and save the world."

Discord breathed his last having choked on his blood. Celestia arranged a proper burial for him and then gave an announcement to everyone, including the dragons, changelings, griffins, yaks, seaponies, and hippogriffs to prepare for war.