
Su-a and Su-e, who are getting to know each other, go on a couple’s trip together. During a fun drinking session with the four of them, Mu-yeol can’t help but be drawn to Su-a’s glamorous figure. Similarly, Do also finds himself captivated by Su-e’s attractive physique, who happens to be Su-a’s younger sister. That night, they end up crossing a line they shouldn’t have crossed.