What would you do if you were suddenly forced to transfer to your rival school, just because you got caught up in someone else's fight? When Lee Ha-eun is sent to the notorious Ganghak High, she never expects to cross paths with Geum Seong-je, a violent, unpredictable fighter with a three-second rule for anyone who dares to meet his eyes. As Ha-eun struggles with bullying and isolation, she finds an unexpected protector in the very boy everyone fears. Because in a world ruled by fists and fear, three seconds is all it takes to fight, to fall, or to feel something real.

Years after a painful breakup, Y/N crosses paths with her ex, Geum Seong-je, on a college campus far from their violent past. But as buried secrets resurface and old wounds reopen, she's forced to confront the boy she once loved and the dangerous world he swore he left behind. started : june 5th finished : july 14th