Si, a high-society heiress, dreams of becoming the president of her family’s company. However, her parents give the position to her younger sister instead, believing Si is too spoiled and irresponsible, spending millions without a second thought. When the family business faces a crisis involving a crucial land lease renewal, negotiations fail—until Klaokavee, the landowner, makes an unusual proposal: she will renew the lease only if Si agrees to marry her. Despite their completely opposite lifestyles, this strange arrangement brings the two into an unexpected and complicated relationship.

A nostalgic, coming-of-age story of identical twin sisters who share every aspect of their lives with one another, until one day a boy walks into their lives and puts their strong bond to the test.