For centuries, ‘Rustica Genesis,’ a brilliant knight of the Kaleta Empire, known for battling against the persistent ‘barrier’ and endless wars, found herself acclaimed. However, as if in a lie, all her strength vanished overnight.

Following this, a mysterious man named ‘Hayden,’ who appeared before her after four years of wandering like a beggar, shared a sweet night with her. Hayden seems to remember Rustica from the past.

Meanwhile, the Emperor of Kaletha summons her, who had been wandering like a beggar for four years, and dispatches her as a diplomat to the Perseta Empire, a longtime enemy beyond the crumbling barrier.

Will Rustica, the former knight who lost all her strength, be able to rediscover her past self?