Mark Lansing, a 35-year-old librarian in Manhattan, leads a life that is nothing short of mundane. He has an unquenchable thirst for knowledge and a deep fascination with mythology, fantasy, and arcane texts. On the eve of his birthday, he finds an enigmatic, ancient-looking book named 'Omniscriptum', hidden deep within the library's vaults. Its pages are filled with symbols he can't understand. Compelled by his curiosity, he reads the mysterious book aloud. The world darkens around him, and he's engulfed by a whirlwind of colors and shadows. When he opens his eyes, he finds himself in a different world - one filled with magic, mythical creatures, and kingdoms at war. This world, called Luxarcadia, has elements of high fantasy – dragons, wizards, elves, dwarves, faeries, and everything in between, all living under the sovereignty of seven grand kingdoms. In Luxarcadia, his knowledge from Earth becomes his greatest strength. The books he's read throughout his life come alive as realities in this world. From the formation of magical runes to understanding different species and their cultures, his vast knowledge becomes an arsenal that makes him respected - and feared - by others. Mark realizes that Luxarcadia is being threatened by a great calamity – a dark sorcerer seeks to destroy the 'Arcane Nexus', the source of all magic and life in Luxarcadia, to seize control over all seven kingdoms. The Librarian of Lost Realms, as Mark is known in this world, must gather a team of heroes to protect the Arcane Nexus and bring peace to the troubled realms. Along the way, he learns that the 'Omniscriptum' is a portal book, capable of transporting the reader to the world written within its pages. It had chosen him, a librarian, as the hero because of his dedication to knowledge and understanding. Mark's journey intertwines with the fates of powerful magic-users, valiant knights, cunning thieves, and mythical creatures as they navigate through political intrigue, ancient prophecies, and epic battles. As the story progresses, Mark starts to unravel the connection between his own world and Luxarcadia. He must answer challenging questions: Why was the Omniscriptum in his library? Why was he chosen? And most importantly, how can he save both Luxarcadia and Earth from an impending doom foretold in the ancient prophecies? "Resurgence: The Librarian of Lost Realms" is a blend of isekai and epic high fantasy, exploring themes of knowledge as power, the importance of understanding different cultures, and the hero's journey to protect those in need. It provides the reader with not just an exploration of a fantastic new world but also the intriguing parallels and symbiosis between the known and the unknown.