A woman has a chance for success, but falls into a bottomless pit of her life. She looks for ways to find happiness through her circumstance.

25 years ago, Haesung group lost their grand daughter Choi Eun Seok. The girl was found and raised by Seo Tae Soo as one of his twin daughters Seo Ji Ahn and Seo Ji Soo, They grew up rich but their father bankrupted and they had to experience the hard life of a dirt spoon. Ji Ahn now is a contract worker at Haesung group who would do anything for a job while Ji Soo is an air headed part timer who has a one sided crush on Sun Woo Hyuk, Unknown to her that Woo Hyuk was in love with Ji Ahn in high school. Choi Do Kyung is Haesung Group oldest grand son, he is gentle and kind but being too good yet still single makes his employees spread weird rumors about him, he meets Ji Ahn in a car accident and comes to know her sad situation but his biggest shock is when his mother reveals that his lost sister is Ji Ahn.