South Korean society values success more than anything else. People tirelessly strive to get ahead. Meanwhile, South Korea ranks at the bottom of the list of happy countries in the world. Korea's suicide rate is the highest among developed countries and the third highest in the entire world… There are things that money cannot buy. Money does not bring honor. Power cannot make one happy. Happiness is more powerful than political power, more valuable than riches, and a step above honor. One mother chases success to live a luxurious lifestyle. A daughter finds success after practically raising herself. Two men love these two women as they pursue happiness. This TV series raises the question of what defines happiness to viewers. (Source: MBC)