Joo Taeman, a seasoned assassin, abides by a simple code: execute missions, eliminate targets, and vanish without a trace. With 14 years of unyielding professionalism, Taeman never let emotions cloud his judgment—until a chance encounter with the beloved celebrity Kang Dahyeok triggers unexpected butterflies. Surprisingly, Dahyeok harbors his own fascination, seeking a partner to shatter his heartthrob image for a grittier noir existence. Amidst this killer crush, the question lingers: who will yield to desire first?