An explosion in Twilight's lab causes a huge disaster all over town. Communications with Canterlot is broken, making it impossible to call for any help before time runs out for the citizens of Ponyville.

The only chance anypony has is the Cutie Mark Crusaders. Can they save Ponyville from its own doom. Celestia help us all!

Thanks to my special friend Bad_Seed_72 for all her wonderful editing work.