Despite being a dominant omega, Yi-Hyeon pheromone gland was damaged in an unexpected accident, so he can no longer emits scent. Yi-Hyeon was certain that he would do anything to protect his alpha Joo-Hyeok (Gong), who had abandoned him when he was young, but Joo-Hyeok appears completely different, not even recognizing him who has lost scent. "I thought that if I could keep my lost mate by my side, it wouldn't matter if he didn't recognize me". However, Joo-Hyeok becomes increasingly harsh on his devoted Kwon Yi-Hyeon (Soo)...