Soyeon ranks top of the liberal arts track at her school and is at war with a single, agonizing flaw that is Junsu, the STEM prodigy, and his effortless streak of top scores. Desperate to break him, she crosses enemy lines to unravel him. But as academic rivalry blurs into unpredictable chemistry, Soyeon discovers that the hardest formulas in life are the ones involving the heart.