While still heartbroken after her new boyfriend leaves to marry another woman, Đan Linh gets into a serious car accident and is rushed to the hospital where she is treated by Phan, a distant and grumpy surgeon. Despite significant initial distaste from both sides, the pair soon grow a profound appreciation for each other's wisdom and bond over their shared experience of family turbulence.

Thang is a Hanoi intellectual and graduates from university with high distinction causing his former teacher, Dao, to invite him to work in a mathematics institute of odd algorithms. He has problems because of his personality and refuses to give up his mathematical perspectives. He distinguishes himself as a person of integrity, which also causes problems for him.