Carter grew up knowing the apocalypse was coming, warned by a childhood friend named Myrina who revealed she was from the Arcadia Multiverse. When the System arrives on Earth, dungeons appear, monsters pour through, and all of humanity gains Levels and Classes. Carter, gifted with the rare Artificer class, must protect a growing community of survivors at Crownhill while navigating a new and brutal world of magic, alliances, and ambition.

Carter is resourceful, loyal, and deeply reluctant about power — he never wanted to be emperor, but he consistently steps up when his people need him. He is an Artificer by class, meaning crafting and engineering solutions to problems is his specialty rather than raw combat strength. He is surrounded by and deeply devoted to several women, making this a harem narrative, though reviewers note the relationships are given genuine emotional depth.

Across six books, the series tracks Carter's rise from unprepared survivor to reluctant emperor of a budding civilization called Crownhill. He forms deep bonds — romantic and otherwise — with Bridget, Sakura, and Myrina, expands his base-building operations to a second world (Themyscira), and faces escalating threats from rival factions, Chaos Gods, undead wizards, and the political demands of an empire he never wanted. The arc culminates in Carter grappling with unexpected fatherhood and the obligations of true leadership.