Julian, a down-on-his-luck inventor, finds himself unexpectedly summoned to a fantasy realm teeming with gods and monsters. His arrival takes an unusual turn when a powerful 'Godcore' merges not with him, but with his smartphone. Now, he's tasked with defending his new home from a looming, divine threat.

Julian is an intelligent, if somewhat socially inept, inventor whose past is marked by a string of failed projects. Despite his initial misfortunes, he possesses an unyielding ingenuity and a lighthearted approach to impossible challenges.

This Isekai adventure chronicles Julian's rapid progression from a bewildered newcomer to a formidable force, as he leverages modern innovation to reshape a medieval world. It's a tale of building a new life and a found family, all while facing divine threats with ever-evolving, imaginative solutions. The series explores themes of engineering marvels, strategic defense, and the unexpected power of a truly smart protagonist.