Some things are thicker than water. Kwak Jahyung lives his life surrounded by hot women – too bad they just happen to be his sisters, as his playboy father has more children than he can count. But boys will be boys, and Jahyung is no exception. After his older sister Hanna gives him a potion meant to screw him over, the two find themselves in a sticky situation that goes to show family can be closer than you’d ever imagine…

Nam-Wook, of the clothing department, looses weight in the military and return to school as a super-stud returning student. Nam-Wook, who barely returned to his school after a excruciating time in the military can’t cope to the sudden rise in his status. He inadvertently checks his smartphone and receives secret messages from a mysterious woman.