Xiao Changce, a top modern engineer, accidentally transmigrates into a foolish imperial prince framed by schemers. After his mother concubine is murdered and assassins are sent to slay him, he leverages his professional knowledge from his past life to invent modern firearms and weaponry. He pacifies Lingnan, subjugates the southern barbarian tribes, unravels all underhanded conspiracies, and finally draws his sword to force the emperor—his own father—to abdicate. Having avenged his mother, he ascends the imperial throne.
