Qi Mu was touched by the performance and decided to search for his father in 2010, but found that his father had moved.Gu Xiaoxiao was taken to a wine shop by his father and left because he conflicted with his blind date.The students were preparing for Level 4, and He Miao held a sprint class to make up for their homework.They met Su Chengcheng on Qimu Street and found that Teacher Chang was injured. The two stayed overnight in Jingyuan. The news was spread by their roommates, and the two were embarrassed.Qin Nian organized a group building and singing, and An Shang was brought in.But everyone was still unhappy and dispersed: Meng Xing had a heart-to-heart talk with He Miao, An Yu was upset because of Qi Mu and Su Chengcheng, Gu Xiaoxiao went to the rooftop to avoid Qin Nian, and Qin Nian came to comfort him. It turned out that they were brothers and sisters.Qi Mu and An Yu broke up unhappy due to differences in competition tactics. Lu Man persuaded An Yu to return to the competition, and they laughed it off with Qi Mu, eventually winning the competition.At the celebration banquet, Qi Mu and Jiang Yuchuan argued about meeting in the final.In the finals, Shi Feng, the main player of the law class, was injured. Jiang Yuchuan became a foreign aid and formulated tactics against He Miao, which caused a conflict and caused Su Chengcheng to be accidentally injured and fainted.When he woke up, he found Qin Nian, the new instructor of the Chinese Department, standing by his side.Qi Mu learned that Su Chengcheng's true identity was Cheng Siqi, and Su Chengcheng admitted that the two decided to test Qin Nian's identity.With the joint efforts of Qi Mu's roommates, as well as Su Chengcheng and his roommates Lu Man, He Miao, and Gu Xiaoxiao, Qi Mu successfully won the college cadre election.After that, Qi Mu continued to test Su Chengcheng's identity.Based on Qi Mu's recent abnormal behavior, the roommates asked Qi Mu what happened. Qi Mu was in a dilemma and had to lie and say that he wanted to treat Su Chengcheng to dinner because he wanted to thank Su Chengcheng, but he couldn't make the date even though he tried his best.Meng Xing, who was overly enthusiastic, decided to call other roommates to help Qi Mu and inquire about Su Chengcheng's movements from various angles.With the help of his childhood relationship with He Miao and He Miao's naturally loud-mouthed personality, he finally found out some clues about Su Chengcheng.