Diana Greengrass, the shy, rebellious twin sister of Astoria, is reluctantly thrust into the limelight at a Slytherin-Gryffindor party. Unprepared and hesitant, she attracts the attention of the infamous Mattheo Riddle, the Slytherin king. What starts as a simple dance spirals into an unforgettable kiss, leaving both Diana and Mattheo grappling with emotions neither expected. As forbidden feelings blossom between enemies, they must navigate the dangers of their families' expectations and their own growing attraction, knowing that their love could never be publicly accepted.