25-years-old Taeyeon is an unemployed good-for-nothing who spends his days living at home and playing Inferno, a wildly popular online game that's sold over ten million copies worldwide. Other than his teamates, Taeyeon uses a royalty sword and bomb with a specialty made with rare item. One day, the game turns into reality that made Taeyeon's level restarts on its own, and live like there living in there real world. With that, Taeyeon need to start all over again as they need to kill infernos to get crystal gem. But what happens if Taeyeon met a beautiful gir named Tiffany Hwang?