Baekyeon Girls' High already feels like a game of survival for new student Seong Su-ji, but when she's introduced to a ranking system that chooses cla…
New student Seong Su-ji is introduced to a ranking system called the Pyramid Game that chooses class outcasts via secret vote. Su-ji must decide whether to accept her status, or partner with a fellow outcast to topple the Pyramid Game.
Su-ji becomes the target of vicious bullying when she discovers a popular classmate is related to the inventor of the Pyramid Game. A teacher offers to help Su-ji, while a blackmail scheme is revealed. Su-ji shares a resolution with Ja-eun.
After the latest Pyramid Game vote, Su-ji and Ja-eun improve their class rankings. Ja-eun tries to protect the newest outcast, while Su-ji feels it's not her business to intervene. Su-ji finds out she had help behind the scenes.
Su-ji and Ja-eun continue to search for allies in their quest to eliminate the Pyramid Game. Unable to convince their classmates, they look for options outside of the school, like hacker Cho Seung-hwa. A bullied girl searches for a way out.
Su-ji finds trouble when a classmate reaches a breaking point on parent visitation day. Ha-rin sends a warning when Su-ji loses Ha-rin's vote. Su-ji's plans gradually fall apart thanks to a friend's betrayal. The 15th game brings an unexpected twist.
A shocking reveal after the 15th game disrupts the class rankings, and prompts complaints from students about flaws in the voting app. Ha-rin has a plan to restore order. A savage game of dodgeball works to Ha-rin's advantage...until the ball stops.
