Momo is a simple and normal girl who is always responsible for her beautiful and peaceful life she always work hard for her family but one day she met this lazy and rich but bad boy named mark tuan and get fired of her work because of her no good father who is always ruining her simple life but she don't mind and always respect him but she found a nice job with a rich man who is hiring her to be a personal maid of his son (mark)so when she did her life change neither did mark Momo is with her friends who are (sana,nayeon,jungyeon,cheayoung,jihyo,dahyun tzuyuand mina) And mark is with their bad boys crew who are(youngjea,yugyeom,jinyoung,jeabum and jackson)