Set 60,000 years ago on the majestic island of Aethoria in the Pacific Ocean, this tale follows the aging King Raharus as he awaits the arrival of a new ruler marked by the sacred Sun Seal. With the seal's absence and Raharus’s diminishing power, the kingdom faces a critical period of decline. External threats from rebellious continents intensify, exacerbating the crisis. The Lost Seal depicts the tension between a faltering realm and the struggle to restore its divine favor and stability.