One is a firefighter, who saves people from fire and water; the other is a doctor, whose mission is to save lives and heal the wounded. They attended the same high school and then entered the same university. In high school, the moment Qi Boyan first met Jasmine, he recognized her as the girl he had met when he was a child. At first, Qi Boyan just paid attention to Jasmine silently. Gradually, this attention turned into love. Whenever others ask Qi Boyan about his ideal type, he will answer according to Jasmine's characteristics, such as being cheerful, brave and smiling like a heart. Until he graduated from college, Qi Boan wanted to confess his love to Jasmine. However, he saw a boy standing next to Jasmine. The two looked intimate and Jasmine smiled extremely sweetly, so Qi Boan buried this emotion deep in his heart. Later, during a certain mission, Qi Boyan never expected to meet Jasmine. He originally thought that three years would be enough for him to let go of her completely, but when he saw Jasmine, his heartbeat accelerated involuntarily. Jasmine was born in a family that favored sons over daughters. Fortunately, she had a grandmother who loved her. But things didn't go as planned. When Jasmine was in college, her grandma left. This series of blows caused Jasmine to fall into a trough. During those days, she often received letters and a little bear. The encouraging words in the letters illuminated her like light. They communicated through letters for nearly half a year, and then she did not receive a reply. Later, Jasmine met her mentor and senior brother, and her life got back on track. That day, Jasmine passed by the scene after returning from rescuing people, and met Qi Boan, a firefighter. At this point, the story of the two of them began.