Song, a hot nerd and food researcher, arranged a one-night stand with a mysterious woman under a strict condition: no strings attached. However, the other party broke the terms, asking for an emotional connection. Song ended the steamy encounter and walked away.

But the world really is round. That woman turned out to be Piangrawin—the daughter of the president of the company where Song worked. And Piangrawin wasn’t letting go easily. She pursued her with puppy-like devotion, entangling Song's heart and routine with reckless charm. She even claimed she’d already named their future child.

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.

一对恩爱夫妻曾许下生死之约，此生不渝，背誓者死。谁曾想，这坚不可摧的誓言终有破碎之日？然世事无常，天意弄人，所谓“至死不渝”的爱情，终究难逃这一定律。

聚焦于两个童年的朋友，一个是老板的女儿，另一个是女仆的女儿，他们在父亲死后被分开了。
我是Phleng。我生来拥有完美的生活，但在我的家庭破产后，它很快就变得天翻地覆。当我有儿时的朋友Wanwiwa和我一起长大时，生活还不算太糟。然而，由于某种不幸的原因，我不得不离开。 十多年后，命运让我们再次相遇。所有的记忆都复活了，感觉比永远不会。

翻拍自小栗旬和#石原里美#主演的同名日剧。故事围绕拥有亿万资产老板与就业困难女大学生展开，讲述一段现代都市里的灰姑娘与王子的浪漫爱情故事。