Naya's life is miserable, on top of that, she gets fired from her job and dumped by her boyfriend. Naya meets Master who offers her the opportunity to exchange her fortune. Naya then chooses Sato's life.

Sato is a renowned businessman, his wealth inherited, and he has a submissive wife and a smart child. However, behind all of this, Sato conceals a dark secret with his father that brings misery to his wife and child.

Meri is a generous, intelligent, and beautiful politician. Meri is married to a kind man who always supports her ambitions. However, Naya eventually realizes that Meri is nothing but a greedy "mouse" who knows no gratitude.

As a chef who has traveled the world in the international culinary scene, Riko is merely a "weak" man wanting to run from his problems. Naya tries to solve Riko's problems with his wife until Naya learns to understand true love.

An accomplished ballerina with constant praise does not guarantee that Lala's life is full of ease. Lala has to bear the "legacy" of burden and trauma to continuously maintain her family's good name.

Tired of the "game", Naya outsmarts Master and the Fortune Exchange Store by bringing her family into the house of someone she chose. Naya feels her life has become perfect, but this greed certainly brings even more disaster.