Yum Jung-ah and Ji Sung play two childhood friends who grow up supporting each other through poverty and all other obstacles, and when they meet again years later, stand by each other as they rise in society's ranks.

[2][3] After marrying into a wealthy and powerful chaebol family (considered by some as Korea's modern-day "royalty"), Kim In-sook's (Yum Jung-ah) life becomes a living hell.

When her husband is killed in a helicopter accident, her mother-in-law (Kim Young-ae) takes In-sook's son away.

When In-sook finally decides that she has had enough and launches a bold plan to take over the family company, Ji-hoon will be there at her side, no matter what it costs him.

The two begin to play a dangerous double game, but in the midst of their battle for survival, their hearts are drawn together in a passion that could cost them everything.