After transferring to a top high school, aspiring rock star Leerit vows to avoid romance — but quickly changes his tune when he meets his new roommate.

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.