The Tale of Aphrodisiac

At their master's request, Ji Eun-hyo and Ryu Sa-jun start investigating the legend of 'Yeonjeongcho', the famed aphrodisiac. For some unknown reason, Sa-jun takes in the fertility medicine, which only sends him ablaze over Eun-hyo. "Did you not say that you would keep your eyes open to see any change in me?" Using the medicine in his advantage, Sa-jun devises a daring plan to make Eun-hyo fall for him. Naive of his hidden motives, Eun-hyo starts carefully observing, touching, and even sleeping with him to see if it works. "Since you are the one who started it, you must finish it."