In the foggy Tianwu University, Tang Huilin accidentally met the silent and reserved Chen Tian. In the days when they are together day and night, two lonely hearts cling to each other and develop sincere feelings. The inferiority complex brought about by his original situation constrained Chen Yuan. Under the heavy pressure of his loved one's serious illness, he chose to deliberately fabricate misunderstandings and cruelly push away his beloved, thinking that this was the best way to fulfill her. Many years later, the truth is revealed, and regret has been fixed in the lush campus years. The fog will eventually dissipate, and those who have missed it will never be able to meet again.