The way to Argentum

The city is shrouded in clouds of steam, and the streets hum with the sound of machinery. Recently, a strange accident occurred at the main factory—a gigantic steam generator suddenly stopped, leaving the entire district without power. The mechanics can only shrug, whispering about the "curse of the old inventor." The factory owner is offering a generous reward to whoever can figure out what caused the breakdown. They say there are clues in old blueprints hidden in the Engineers' Archive... But the archive is guarded by knights.