Law of friction

In the heart of Elite Horizon Academy, secrets are the only currency that matters. Karina, a wealthy, intimidating law student known for her sharp mind and masculine fashion, rules the campus as the sister of the school's most notorious bully, Jeawook.

Meanwhile, Winter-a charismatic, skateboard-riding heartthrob who moves seamlessly between genders-is the object of everyone's fascination and fear. But beneath her popular facade, Winter hides a billion-dollar inheritance, a traumatic fallout with her estranged family, and a double life as an undercover FBI agent.

She is joined by her fellow agents, Ningning and Minji, who are embedded in the school to expose the university's horrific crimes: the systematic financial abuse of scholarship students and the targeted victimization of the vulnerable. Together, the three agents navigate a world of privilege and rot, unaware that the girl Winter is secretly falling for is the sister of her greatest enemy.