Even though she is unable to have a proper wedding due to the disapproval of in-laws, Yeon Hee has been a great mother, wife, and daughter-in-law for 25 years. However, everything changes when Yu Na, her husband Jun Ho's mistress, appears and Yeon Hee's health deteriorates as well. Unlike Yeon Hee, Yu Na is a woman who abandons her sacrificial husband, Jae Kyung, and her son, Ha Neul, and chooses Jun Ho for success although Jun Ho is married and she had already rejected him 10 years ago. The four completely different people try to form a different kind of family and try hard to remain together.

In the late 19th century, escaping from feudal society, everyone starts dreaming big. Tens of stores are newly open in Namdaemun and Dongdaemun. And Bong Sam, the son of a collapsed peddler, starts from rock bottom and does everything he can to reach the top of society. The drama depicts his journey of becoming one of the wealthiest merchants in Joseon from a puller-in at a marketplace. Just like the modern days, capitalism and a free market economy prevailed at the time. Bong Sam shows how to seek a chance to earn money and maximize profits and how wicked and greedy monopolies are crushed by him.