All right, imagine this: The transistor has been invented in Equestria. This small device is used to make simplistic machines and computer intelligence. It's being used to capture and regulate lightning within the belly of a powerful and fearful weapon known as the Arc Caster. It holds this force of nature within these regulated canisters and can then be safely unleashed into anything you don't like when you need to smite something with the fist of a deity. And Steam Peaks has let it fall into the hooves of it's long exiled Princess. Steam Peaks, a city that clings to the side of a mountain miles from Canterlot, relies on it's engineering and steam power over magic to deal with their regular issues and problems. The city of metal and wood is sunken into the mountain with a constant cloud around it. Not from breaking the cloud layer but from the constant smoke and steam from boilers. Princess Cydonia has decided that she would take Steam Peaks by force and is now threatening to blow the city of the side of the mountain with lightning if they don't build her something imposing to take Celestia's throne from her. For now, they're complying but they've gotten the message out about the impending danger to Canterlot. Are you going to answer the call, travel to Steam Peaks and take back the Arc Caster before an entire city is blasted from the rock? Remember, it's a long way down...