When Aileen's engagement to the crown prince is abruptly ended for another, she realizes she's been reborn as the villainess in an otome game fated to die. To evade her destined demise, she must woo Claude, the enigmatic 'Demon King' and prince's half-brother. Despite Claude's skepticism, Aileen persists in earning his trust by assisting him in uniting humans and demons. As the clock ticks, Aileen holds the key to rewriting not just her own tragic narrative but also Claude's uncertain fate.