When Mina makes a bet to get the school's star idol, Jaehyun, to break his "no dating" rule and ask her out, she has no idea what she's in for. From awkward run-ins to unexpected moments that reveal Jaehyun's real personality, her playful mission turns into something much more real. But as her feelings deepen, the lines between her challenge and her heart begin to blur. Will she win the bet-or lose herself in the process? A high school slow-burn romance filled with humor, heart-fluttering moments, and the thrill of an impossible crush.