Xu Dongju (played by Park Hyun-sik), the head of the secretariat of Dashan Group, is an obscenely loyal subordinate, but in fact he is ambitious and has always been eager to reach the top of the group.By chance, he unexpectedly received a 2 trillion won black gold. He originally wanted to use this money to change his destiny, but instead he was in danger of his life. He embarked on a journey of revenge to fight against the mastermind behind the scenes.

Xu Dongzhu grew up in an orphanage and has the ability to remember everything and meticulous thoughts. He was favored by the president Che Qiangqian (played by Yu Xian) for the first time.Dongzhu has served for Dashan Group for many years and served as the external cooperation group leader of the president's secretary's office. He is eager to stand at a higher position in his heart.

Dashan Group only has daughters and granddaughters and no male descendants. Someone once suggested that Dongzhu fight for his granddaughter to take over the entire group. However, Dongzhu has a good impression of the new employee Lu Chengnan (played by Hong Huayan), and decisively gave up the great opportunity to approach the group's daughter.The two lived together sweetly for a while. Dongzhu planned to propose to Shunun, but was suddenly called by the president to accompany him to the wedding. The bride was no one else, but the daughter of Dashan Group - Lu Shunun.

The uncontrollable group of gold

When the man lost his father when he was young, his mother Cha Jo-hee (played by Kim Jung-lan) immediately remarried to her father's friend Xu Yidao (played by Lee Hae-young), which made her always suspect that Xu Yidao was related to her father's death and was determined to find out the truth.

The man concealed his identity and enjoyed a wonderful time in love with Dongju, and finally cruelly dumped him and married Yan Heechul (played by Kwon Soo-hyun), a prosecutor of the Seoul District Prosecutor's Office.Lian Heechul is the nephew of Lian Zhangxian (played by Xu Junhao), the former president of the National Intelligence Agency. He seemed to have had a feud with Dongzhu when he was a student, and he would face him tit-for-tat as soon as he met.

Dongzhu sadly accepted the fact that his lover married someone else, and then realized that everyone around him knew their secret relationship.Che Qiangqian thought he was embarrassed with Dashan Group, so he decided to keep him after a test and revealed to him that he had a secret illegitimate child.

Xu Yidao was exposed by Dongzhu and held a grudge against him.Dongju, Xu Yidao, and Cha Guoxi (played by Hong So Hyun) are all eager to become the successor of the group, and competition is about to break out.