The story is about the Mc's journey from zero to hero as he receives a broken, one of a kind class that allows him, an idiotic, dislikable, yet 'tenacious' loser to become the strongest individual in a game. Unlike most manhwas, the Mc makes good allies, builds his own empire, and overall matures as an individual to become respected amongst his peers.
Despite this, the story fails to branch out from your generic leveling manhwa, as the power scaling is completely broken leaving readers with little investment in it's fights. Every other chapter there are fodder enemies created to simply die to the mc and his crew. Also, some characters get completely overpowered simply because of the fact that they are close to the mc for 'plot convenience'. An example of this is the Mc's sister who obtains one of the greatest classes in the game after playing for no more than 1 hour. She gains this class because of her 'KINDNESS TO OTHERS', completely ruining the game's progression system of working hard to become better. His sister is only one of many examples of broken powerups simply to increase the Mc's glory as the greatest player. As a result, the story goes downhill the longer you read it, becoming more repetitive and boring after your investment in the world fades away.
Conclusion: A bad story riddled with unnecessary plot holes that ruin your reading experience, since the main characters could undergo a 10x powerup in one chapter, or gain no power in 10, the story quickly becomes just another 'power fantasy manhwa' after the novelty of the first few chapters fades away. However, if you like the level of story presented in normal power fantasies, this story is probably a must read.
Side note: The art is pretty good since it is drawn by members of the same team that drew solo leveling. Despite this, the art isn't as great as solo leveling's and is no greater that what you see in your average manhwa nowadays.