Two childhood friends grow up supporting each other through the difficulties of poverty, then meet again years later and stand by each other as they rise through the ranks of society. After marrying into a wealthy business family, Kim In Sook's life becomes a living hell. Seen by her in-laws as a gold-digging intruder, she is pushed to the margins. When her husband is killed in a helicopter accident, her mother-in-law takes away In Sook's beloved son. Enter Han Ji Hoon, an old friend of In Sook, and powerhouse new family lawyer determined to put a stop to In Sook's mistreatment. In Sook finally retaliates by launching a bold plan to take over the family company, and Ji Hoon supports her no matter the cost. In the midst of their battle for survival, their hearts are drawn together in a passion that could end up costing them everything.