The year is 3015. The Great Houses of the Inner Sphere have been waging bitter war for over a century. While the battlefields burn with an array of devastating weaponry, none is more formidable than the BattleMech. Skilled Mercenaries have never been in greater demand, and you aim to make your mark.
The first BattleMech prototype is produced by the Terran Hegemony. Though merely a shadow of what's to come, it immediately outclasses all other forms of ground warfare.
The Star League is born. An interstellar council formed from constituent factions within the Inner Sphere; it thrives for 200 years before falling apart in Civil War.
The First Succession War begins in the wake of the Star League's collapse. Billions of lives are lost, and technological development begins to regress.
The Third Succession War begins. The development of new technologies has all but ceased; the Great Houses now scavenge and repair existing technologies they barely understand while the Inner Sphere continues to burn.
In the midst of this war, a young pilot inherits what remains of a small Mercenary outfit. This is where your story begins.