Sun Yihe (Song Qian), Ren Ran (Li Chun), Ding Ding (Zhang Jianing) and Xue Kairui (Lu Jingshan) are sisters with very good feelings. They have stepped into the threshold of thirty years old hand in hand, and each faces emotional confusion and pressure in life. Sun Yihe is a strong woman in the workplace, but she is timid and submissive when it comes to feelings; Ren Ran is talented, but no matter how hard she tries, she will always be Li Youting's "second choice". Ding Ding always goes to one blind date dinner after another until she meets a man named Yang Sika. After getting rid of her last failed marriage, Xue Kairui treats her new relationship cautiously, but in hesitation, she finds that she is seriously ill and has not much time left. Men are diverse and their lives are different. After experiencing ups and downs, the four women finally understand that the most worthy of love is themselves.