Mi-na, who enjoys a business trip massage at her house, admires the skills of the new business trip massage therapist, Hyeon-goo, and decides to introduce Hyeon-goo to her close younger sister, So-hee. At first, So-hee, who was reluctant to meet Hyeon-goo, fell for his massage skills. Then one day, Mi-na made a new proposal to So-hee and Hyeon-goo...