Leaving behind only a single key, my father, a renowned web novel author known for his 'Overpowered MC' stories, passed away. Ten years later, a virtual reality game called 'The Another World,' based on one of his works, becomes a place where people can make a living or even strike it rich.<br><br>Kim Woojoo, the author's son, has been living a tough life with no special advantages. By chance, he discovers that the key, a keepsake from his father, is being traded at a high price. He decides to use the key to open a limited edition book in his father's study and receives a special gift within the game.<br><br>Accepting the gift, Woojoo encounters the Great Demon King Lucia, a character from his father's web novel. Lucia grants Woojoo incredible abilities, but the power is so overwhelming that Woojoo struggles to complete even simple daily quests.<br><br>After much thought, Woojoo decides to eliminate the source of his power, the Demon King, by bringing in another character, Killer Zero. However, his actions draw the attention of Jason, a powerful player in 'The Another World,' who comes to confront him.<br><br>Will Woojoo be able to face the strongest characters in the game, the ultimate beings from his father's web novel?