After graduating from university, Jiang Tang was frustrated at work and found several jobs but decided to take the postgraduate entrance examination. While studying for graduate school, Jiang Tang found a job as an artist's assistant. She joined a small company. She worked diligently every day, but one day she suddenly fainted and went to the hospital. The patient she met while working as a volunteer was One of the doctors, He Yu, said in a cold and mechanical tone while wearing a mask: "Do you often stay up late? The load on your heart is too great and you may die suddenly if you continue like this." Jiang Tang was shocked, "It can't be that serious, right?" "Are you a doctor or am I a doctor?" He Yu said coldly while wearing a mask. "Then is there anything we need to pay attention to?" Jiang Tang had no choice but to accept it. "Pay attention to rest, go to bed early and get up early to relax," He Yu gave her the medical advice while writing the diagnosis sheet. Since seeing a doctor in the hospital, Jiang Tang seems to have opened a lottery for chance encounters with He Yu. He can meet him when he goes to take outdoor photos for artists, when he goes to a restaurant to eat, when he goes for a follow-up visit, and even when filming at the company's cooperative hospital, he meets him again. As they slowly got along, the two gradually fell in love with each other, but their love came to an abrupt end when they were about to break the window paper...