Oscar, an ordinary person from our world, is unexpectedly reincarnated by a higher being into a fantasy world on the brink of apocalypse. Along with his reincarnation, he is granted a phone with extraordinary abilities. In this new world, the god who once governed magic and magical creatures has perished, causing chaos and devastation. All forms of magic have disappeared, and magical beings like elves and dwarfs have also been banished, leaving behind only their abandoned belongings. As Oscar explores this post-apocalyptic world, he discovers that the departure of magic has resulted in a forceful mutation of both plants and non-magical creatures. The once beautiful landscapes are now overrun with mutated flora and fauna, posing great dangers to the remaining human settlements. With his newfound abilities and knowledge from our world, Oscar becomes determined to bring hope and restore balance to this decaying realm.