Episode 1 recap: Yan Mo travels back two hundred years to obtain Gu Yan Zhi's blood.
In the year 2222, Yan Mo (played by Zong Yuan Yuan) is an actress who acquires a strange blood disease due to an accident. The only cure for her is a serum made from a special type of blood. Yan Mo's friend, Lu Fei Yan, is a time-traveling scientist who discovers through historical records that the only person who fits the criteria is Gu Yan Zhi, a great scientist from the year 2022, two hundred years in the past.
After a year of research and development, Lu Fei Yan successfully invents a time-traveling machine and prepares to send Yan Mo back to 2022 to obtain Gu Yan Zhi's blood. Lu Fei Yan inputs all of Gu Yan Zhi's information into a robot named Little O, and Yan Mo is instructed to take Little O with her.
Lu Fei Yan's time machine, called the Closed Timelike Curve (CTC) loop, allows time travel within a closed timeline. Yan Mo becomes the subject of this timeline, and Lu Fei Yan emphasizes the importance of Yan Mo not altering history. Yan Mo's lifespan is only one year, and Lu Fei Yan reminds her to return within that time frame. Additionally, Lu Fei Yan provides Yan Mo with a blood collection device similar to a bracelet for easy blood extraction.
Lu Fei Yan also gives Yan Mo an invisibility potion, but warns her of its side effects, advising her to use it only when absolutely necessary. Anxious to begin her mission, Yan Mo doesn't fully hear Lu Fei Yan's instructions to avoid revealing her identity. Gu Yan Zhi (played by Zhang Chao) is the greatest scientist of the 21st century, gaining attention in the industry at a young age with numerous influential research papers.
Having earned a Ph.D. abroad with outstanding achievements, Gu Yan Zhi returns to China and becomes the head of research at the Gao Shen Group's Biotechnology Institute. After years of research, Gu Yan Zhi and his team overcome the challenge of postoperative rejection in blood diseases, saving countless patients.
On the stormy night of April 23, 2022, Yan Mo travels to Gu Yan Zhi's doorstep. Yan Mo finds a way to enter Gu Yan Zhi's house but accidentally makes a noise, waking him up. She proceeds to collect Gu Yan Zhi's blood.
Thinking she has succeeded in obtaining the blood, Yan Mo suddenly finds herself back at 6 a.m. on April 23, meeting her assistant, Little O. Confused about what happened, Little O suggests that Yan Mo triggered a time loop.
Not understanding the meaning, Yan Mo is informed by Little O that if she doesn't conceal her identity as a person from the future, it will trigger a time loop and send her back to any previous point in time. Realizing this, Yan Mo decides to be more cautious and quickly return home. However, Little O reminds her that she is currently dressed as a person from the future, and triggering another time loop would further reduce her remaining lifespan by one month.
To conceal her identity as a person from the future, Yan Mo starts learning from Little O about the life of people in the present and everything about Gu Yan Zhi, preparing herself to get closer to him. Gu Yan Zhi is meticulous with his work, and as soon as he returns to the research institute, he upsets all the directors and even fires his third assistant for a minor mistake.
The HR department is in a difficult situation regarding hiring, and they want Gu Yan Zhi to lower his requirements. However, Gu Yan Zhi insists on being even stricter and decides to personally give a test to the applicants. Gu Yan Zhi is pressured by his friend, Lao Sui, to attend the award ceremony for future technology, and although he agrees to attend, he refuses to accept the award, which embarrasses Lao Sui.
After the award ceremony, Lao Sui feels that it's too late and asks Gu Yan Zhi to stay overnight at a hotel. Meanwhile, Yan Mo plans to take advantage of this opportunity to collect Gu Yan Zhi's blood. Yan Mo arrives at the hotel, uses her bracelet to open the hotel room door, and enters the bedroom, intending to take Gu Yan Zhi's blood. However, Gu Yan Zhi wakes up at that moment.
Yan Mo is caught by Gu Yan Zhi in the act, and she can only lie and claim to be Gu Yan Zhi's fan. However, Gu Yan Zhi sees through her lie right away. Unable to explain herself, Yan Mo tries to escape by pretending she entered the wrong room, but Gu Yan Zhi doesn't agree.
Gu Yan Zhi demands that Yan Mo explain herself, threatening to call the police if she doesn't. In an accidental turn of events, the two end up embracing and falling to the ground. Yan Mo fails to collect the blood, and because of the incident with Yan Mo, Gu Yan Zhi becomes the subject of gossip among others. Lao Sui goes to inquire about Gu Yan Zhi's situation early in the morning and upon learning about Yan Mo's attempt to get close to him, he agrees to investigate Yan Mo's identity as per Gu Yan Zhi's request.
Yan Mo tries various methods but fails to get close to Gu Yan Zhi. Therefore, Little O suggests that Yan Mo apply for the position of Gu Yan Zhi's assistant. Yan Mo passes the assistant exam, but Gu Yan Zhi believes that she wants to get close to him romantically and firmly refuses to let her become his assistant.
The HR department reminds Gu Yan Zhi that only Yan Mo and Little O have passed the assistant exam. So, Gu Yan Zhi considers hiring Little O, but Little O refuses the position in order to support Yan Mo. With Yan Mo rejected by Gu Yan Zhi, she has no choice but to let Little O become a janitor and monitor Gu Yan Zhi's every move.
Yan Mo follows Gu Yan Zhi while he is having a meal and happens to witness someone trying to take upskirt photos. She decides to help Gu Yan Zhi catch the offender and they work together for the greater good.
What's your love tutorial, General Sui? It's fine to deceive us girls, just don't deceive yourself in the process. It doesn't matter if we are fooled, we can just laugh it off. But I hope that after posting this video, you wipe away the tears from the corner of your eyes, so they don't fall on the phone screen.
We can believe your words to some extent. It can bring you some peace of mind. But saying these things just to deceive us girls is enough. We can believe you a bit without losing anything significant.