Mathematics genius Bai Heng closed himself for three years after the death of his lover Xu Weiwei. Until he received the encrypted message left by Weiwei during his lifetime, he restarted the unfinished "third solution". In the process of fulfilling his last wish, Bai Heng regained his life and partnered with Weiwei's cousin Jiang Nanwan, working openly and secretly for national scientific research. This is a story about love and inheritance - love makes a person broken, but also makes a person stand up again after being broken and continue to walk the path of two people.