Ji Cheng, 18, is a college freshman. She's determined to enjoy her youth over the next four years, and hopefully find a handsome boyfriend to have a passionate, earth-shaking romance with.
Chang Jiu, 38, has just returned from a business trip. Her heavy workload and monthly mortgage payments are suffocating her, so between giving up and forcing herself to keep going, she chooses to lie down while working overtime.
Zhong Yu, 58, moves to her daughter's city after retiring. Menopause has been bothering her for years, and her child's marriage prospects keep her up all night.
The three women seem to have nothing in common, but on their birthdays, they switch souls--
The college student finds herself in a company conference room. From everyone's reaction, it seems it's her turn to give a work report.
The office worker sits in a strange room as an unfamiliar child wails and reaches out for her to hold them.
The retiree stands on a school sports field, facing a two-kilometer run with a time limit of twelve and a half minutes.
Their lives have been turned upside down. To get their own bodies back, the three women, who have never met before, embark on a chaotic and extraordinary adventure.
Premise: Life is full of endless possibilities