In a world where reality has splintered into layers governed by interdimensional systems, Ethan Cross, a down-and-out tech genius and former dungeon hunter, dies after being betrayed in the financial and hunting worlds. Upon his death, he is reincarnated into a world blending video game mechanics, dungeon systems, and a wealth-driven economy. Armed with a Multi-System Interface that grants him mastery over technology, combat, and finance, Ethan embarks on a journey to ascend through the layers of this universe and become the Sovereign of Systems. Along the way, he battles interdimensional threats, corrupt corporations, rival hunters, and his own demons.