Upon transferring to Xingcheng Mingli High School, Shen Xingruo lived under the same roof as Lu Xingyan and attended the same class. Over the course of a year and a half, their relationship evolved from initial animosity to gradually developing feelings for each other. Years later, they are reunited through, "Go Back Lover," a reality show for exes, first love, and the nostalgia of youth between high school friends.
Lu Xingyan and Shen Xingruo were once sweet lovers, but unfortunately they broke up. A few years later, Shen Xingruo, who became a variety show producer, is looking for a male guest in her new love show 'Go Back Lover'. At this time, she meets Lu Xingyan again.
Shen Xingruo tries to persuade Lu Xingyan to participate in the show. Lu Xingyan tries every means to find out whether Shen Xingruo still has unresolved feelings for him. Shen Xingruo seriously draw a clear line with him.
Lu Xingyan knows that Shen Xingruo had mortgage her house to invest in the show. So he decides to participate in the show despite Xu Chengzhou's objection.
In order to prevent Shen Xingruo from getting close to Lu Xingyan again, Yu Si suggests that he could help to attract new investment. Yu Si's offer is so attractive that Shen Xingruo has to reconsider her choice of guest.
After failing to reconcile, Li Qi is filled with resentment and chase Shi Qin directly to her home. Shi Qin panics and calls Shen Xingruo for help. Shen Xingruo and Lu Xingyan rush over immediately.
He Siyue persuades Shi Qin to participate in the dating show. They will form a couple in the state of 'Lovers in progress'. Shi Qin still hesitates in her heart, but she decides to give it a try.
Shen Xingruo and Lu Xingyan drink and talk under the moonlight, and their relationship takes a step further.
Chen Zhu and Xu Chengzhou chose to have their date in the courtyard. They talk fiercely until the end.
Shen Xingruo and Lu Xingyan have to point out one of each other's shortcomings during a date. Because of Yu Si's incident, the atmosphere is not harmonious, and the two reveal the real reason for their breakup.
To resolve the conflict between the "Double-Star" Pei Yue takes the initiative to find Shen Xingruo. Pei Yue takes out the small box of memories that Lu Xingyan had collected. Shen Xingruo looks at the note and recalled the unforgettable night.
Shen Xingruo is very confused as to why Yu Si came to participate in the show, but Yu Si says that he just didn't want Shen Xingruo and Lu Xingyan to repeat the same mistake.
Lu Xingyan can't help but ask Shen Xingruo what stage their relationship is at. Shen Xingruo doesn't know how to respond and could only say that she would think about it seriously.
Xu Chengzhou buys yellow roses to the cafe to show his sincerity. Chen Zhu arrives late and sees Zhai Jiajing holding the roses. She misunderstands that Xu Chengzhou gave those flowers to Zhai Jiajin.
Huang Bing, a film crew, faints and is sent to the hospital due to excessive workload. Huang Bing's wife demands compensation. Shen Xingruo and Zhai Jiajing go to see Huang Bing's wife and find out that the lawyer representing them is actually Shi Qin.
To find out the truth, Shen Xing and Lu Xingyan decide to go to Huang Bing's hometown, Changqing Village to investigate...
Xu Chengzhou suddenly comes to his senses and decides to care for Chen Zhu wholeheartedly. Shen Xingruo begins to feel that marriage is not as scary as she imagined.
Shi Qin goes to Zhai Jiajing to ask for clarification. Zhai Jiajing confesses that she and He Siyue had maintained this kind of friendship for more than ten years. Shi Qin is disheartened.
Facing the sudden news of her father's death, Shen Xingruo is a little dazed for a moment. Lu Xingyan doesn't know how to comfort her...
Yu Si learned about the conflict between the "Double-Star" and went to visit Shen Xingruo. Yu Si expressed his willingness to take Shen Xingruo back to Germany to stay away from the troubles...
He Siyue is hiding many things in his heart for too many years. This time, he doesn't want to hide them anymore...
Shen Xingruo rushs to the hospital, but because she and Lu Xingyan are not married, she can't sign the surgery consent form for Lu Xingyan...
Lu Xingyan feels Shen Xingruo's initiative in this relationship, but he always thinks that he is overthinking it.
The program team suffers from poor reviews. Lu Xingyan tries to help but end up arguing with Shen Xingruo. Zhai Jiajing is excited to see Shen Xingruo losing both her boyfriend and her work.
Xu Chengzhou and Chen Zhu accidentally find a proposal site design drawing on the sofa in the villa, and speculated that Lu Xingyan is going to propose to Shen Xingruo...
