Lu Yan suffers from a blood disorder. Unwilling to drag down his lover Song Zhiyi, he chose to break up five years ago. Five years later, while accompanying his sister for a prenatal checkup, he reunites with Song Zhiyi, who is now an attending physician. Hiding their current situations from each other, they generate layers of misunderstandings. As past secrets are unraveled layer by layer, and after enduring the trials of illness and external interference, the misunderstandings are completely resolved. Crossing over the tests of life and death, the two untie the knots in their hearts, stay together, and welcome a fulfilling destination that belongs to them.