Think of us, not our parents. I want to be your man, not your brother. Jae hee is with many men who have given her a better world than her first sexual encounter. When her mother remarried a man named Yin Zai, she began to tire of men. Jae hee was attracted to him. Finally, they fell in love with each other and became more than just "brothers and sisters". Then one day, Jae hee's mother got pregnant, and things got complicated...
