On the tenth anniversary of graduation, the news of Bai Xiaoyu's marriage broke the silence among the five people. Wang Teng went to Qijian dormitory to investigate, but he revealed two names that had been hidden for 13 years. The day before the military training parade on the university campus 13 years ago, a gunshot on the playground ended a love story that once made thousands of students cry and sing. Wang Teng learns about the mystery behind the shooting. Amao disappears from the university campus, and Bai Xiaoyu waits alone... Dormitory 502, which he once vowed to have potatoes bloom and compete with peonies, is decadent. The love between Shou Tianyin and Fang Qinqin, whom Amao secretly recommended, is growing. When Fang Qinqin moves out of the hepatitis B virus isolation dormitory, Shou Tianyin leaves school and becomes a monk in Qinghai. Wang Tengchen was upset and Lao Mu ridiculed him. In order to bring back the former Seven Swords, Dormitory 209 decided to form a fellowship dormitory with 502. Wang Teng and Jiao Rou co-starred in a drama and fell in love, but they fell into an abnormal relationship due to a fight with the owner of a billiards hall who was disguised as a man. A beating from the security department woke him up. It turned out that she and the security director... Jiao Rou was hospitalized and suspended from school due to sadness. The boss Xue Ranling adheres to his creed, his domineering iron-fisted style and his possessiveness for fame, and gradually conflicts with Wang Teng and 209. The Tibetan student Gillian secretly likes the boss. He is tired and accepts it, but he has to make her wait for him for a year. She angrily walks together with her teacher Shang Ye. Wang Teng studied hard, and his English teacher Yulan encouraged him to go abroad. During the contact, he discovered that she was having an affair with the director of the foreign language department. The truth made him helpless and became a flower protector, but was discovered by her husband... Graduation was approaching, and Seven Swords suddenly discovered...