In the summer of 2008, Do-hyun, a fourth grader, has all of his beloved in-game character’s items stolen. He sets off on a quest with his classmate Tae-hee to find the scammer, encountering various people both inside and outside the game. Amid misunderstandings and conflicts, the two uncover clues about the scammer, eventually succeeding in tracking them down. Through this experience, Do-hyun and Tae-hee grow up and decide to start the game anew together.