When the wealthy family's beloved, Su Wanqing, falls ill, her family discovers a fatal problem: the company's stock price and her kidney function are failing in tandem.
Ling Yifeng, known around town as "the number one rich-family layabout," brings home a "replacement" he found by the seaside.
This replacement, Ye Caiyin, has sun-kissed skin that practically shines. She's brisk and straightforward, and looks exactly like the woman in the hospital bed.
Ye Caiyin: "Wait, I was doing just fine as a lifeguard, and now you're telling me I have a rich twin sister? And she's about to die?"
And so, a "rich-family makeover" is forced upon her.
From her hospital bed, Su Wanqing remotely sends her sister toffee candies: "Don't copy the way I walk. Your toes turning out makes you look so full of life!"
At a banquet, Ye Caiyin downs red wine like grape juice, then gives her sister's corporate rival a shoulder throw.
Onlooker Lu Chenxuan pushes up his gold-rimmed glasses. "Miss Su, that was a very professional throw."
Just as everyone thinks this is a heartwarming story about a "frail older sister changing her fate with the help of her hilarious younger sister"...
The older sister's condition suddenly worsens, and her husband, Gu Yanshen, yells at the younger sister with red-rimmed eyes: "You'll never take her place!"
Ye Caiyin slams the door on her way out. Whoever wants this stand-in job can have it! I'm going back to being a lifeguard!
But then a notice from the hospital arrives: "You are the only person in the entire family who can donate a kidney."
Ye Caiyin looks at the waves rolling along the shore and remembers the toffee her sister gave her.
She grits her teeth and signs the consent form.
And then the hospital suddenly announces: "We've found a compatible kidney donor! You don't have to donate!"
Ye Caiyin: "... Do you rich families have temporary workers for kidneys, too?"
