Episode 18 recap: The truth about the illegal experiment was exposed, and Yan Mo successfully collected blood samples and planned to leave.

Wei Wei saved Lao Sui and took him to the hospital. At the same time, she warned Lao Sui about Zhao's tactics and advised him to be cautious. Gu Yan Zhi visited Lao Sui, but Lao Sui didn't say anything except admitting that he had carelessly forgotten to bring medicine. Gu Yan Zhi explained that his experiment had made progress and the immediate task was to deal with the issue of the illegal experiment. He requested Lao Sui's cooperation.

Soon, Gu Yan Zhi officially reported Gao Xin Group for conducting illegal experiments, causing a significant drop in its stock price. Shareholders also pressured Lao Sui to resolve the issue. Suspecting that Lao Sui and Gu Yan Zhi had a falling out over profit sharing, the shareholders believed that they had reported Gao Xin Group together to exclusively benefit from the experimental results. Wei Wei expressed that Lao Sui and Gu Yan Zhi had a good relationship and it was possible that they had conspired together to conduct the illegal experiment for their own gain.

Zhao and Wei Wei plotted to frame Gu Yan Zhi. Lao Sui couldn't explain clearly and could only promise to submit his resignation to appease the shareholders. When Gu Yan Zhi was suspected by Gao Xin Group, he voluntarily suspended the work at the research institute and the progress of the experiment to cooperate with the investigation. Yan Mo learned that Gu Yan Zhi had withdrawn from the research institute and suspected that he had other arrangements. She wanted to clarify with Gu Yan Zhi, but he refused to say anything.

Yan Mo shared her suspicions with Lu Fei Yan and Song Ranran. Song Ranran thought that Gu Yan Zhi deserved to be taught a lesson and advised Yan Mo not to meet him for a while to give him the cold shoulder. Yan Mo didn't believe Song Ranran's words, but seeing Lu Fei Yan obediently following Song Ranran's instructions, she chose to believe Song Ranran and moved to Song Ranran's place.

Song Ranran gave her bedroom to Yan Mo and went to share a bed with Lu Fei Yan. Lu Fei Yan wanted to refuse but didn't dare to, so she could only obediently follow Song Ranran's arrangement. Wei Wei arranged a meeting with Gu Yan Zhi to convey Zhao's intentions and asked Gu Yan Zhi to continue providing them with experimental data.

Initially, Gu Yan Zhi refused to cooperate with Zhao. Wei Wei then proposed conditions for cooperation, and Gu Yan Zhi pretended to consider them while secretly recording their conversation.

After Lao Sui and Gu Yan Zhi left Gao Xin, Zhao saw an opportunity to temporarily suspend the experimental project and let his Minghao continue the experiment to steal the research results.

Gu Yan Zhi and Lao Sui barged into the shareholders' meeting, presenting the recorded evidence and the evidence provided by Xiao Zi Bai, exposing Zhao's misconduct in conducting illegal experiments. Zhao and Wei Wei's act of stealing experimental data was revealed. Only then did Gu Yan Zhi confess everything to Yan Mo, explaining that he used this fastest method to solve the problem in order for Yan Mo to receive treatment as soon as possible.

Yan Mo understood the situation and no longer blamed Gu Yan Zhi in her heart. However, she pretended to be angry and teased Gu Yan Zhi because he didn't tell her the truth. Gu Yan Zhi and Lao Sui arranged to meet at the school to clarify their situation, while Lao Sui took this opportunity to settle things with Yan Mo.

Lao Sui requested to have a private conversation with Yan Mo, where he truthfully expressed his feelings for her and his decision to let go. He only wished that if they could start over, he would have met Yan Mo before Gu Yan Zhi did. Gu Yan Zhi resolved all the matters and hoped that Yan Mo would accept treatment. Yan Mo then told Gu Yan Zhi that once she started treatment, they wouldn't be able to see each other again. However, Gu Yan Zhi still supported her decision to receive treatment.

Yan Mo no longer had any concerns. After Gu Yan Zhi fell asleep, she quietly took his blood for testing. When the blood test came back positive, the time came for them to say goodbye. This time, not only Yan Mo couldn't bear to leave, but even Little O realized that he had someone he couldn't let go of.

Little O went to find Gu Si Yu for a final farewell. They parted ways, and Gu Si Yu couldn't accept Little O's sudden departure. Gu Si Yu first approached Gu Yan Zhi and questioned whether he knew about Yan Mo's intention to leave. Unexpectedly, Gu Yan Zhi not only knew but also didn't want to stop her, which made Gu Si Yu very angry.

Gu Si Yu didn't want Little O to leave like this. She wanted to make a final attempt to keep him, so she ran to find Little O.