In the bustling heart of Seoul, Hong Hae-in, a sweet yet fierce CEO of a small fashion company, saves a girl from her boss's harassment, unknowingly catapulting herself into the spotlight when the act goes viral. Ryu Shi-oh, the morally gray CEO of a powerful stock exchange, is captivated by Hae-in's courage and hires her as his personal stylist. Their no-strings-attached relationship quickly spirals into a passionate affair, but Hae-in harbors a dark secret: she's a top inspector for Korea's Intelligence Agency, on a mission to bring down Shi-oh's family for her mission as well as a personal grudge she harbors. As love blurs the lines between revenge and redemption, both must confront their tangled destinies. Will Hae-in's quest for vengeance cost her the man who ignites her heart, or can Shi-oh's love save them both? In a story filled with passion, betrayal, and moral dilemmas, discover if love can truly conquer all.