Myeong Sung-a, a high school girl, holds the top rank as "JjamSunRamen" in a popular online game. She wants to keep her identity as a Ranker a secret from those around her. However, on her first day of high school, she encounters Kang Hanjoon, who plays "StrongJun," her nemesis in the game.

While contemplating dropping out of school to avoid having her secret revealed to Kang Hanjoon, she meets Ahn Tae-eui, who looks exactly like her in-game character. Sung-a falls for Tae-eui at first sight.