The main line is the emotional entanglement between Hu Xiyan, He Ruiyang and Jiang Tao spanning fifteen years. Interpol He Ruiyang approached doctor Hu Xiyan in order to investigate Jiang Tao's criminal network, but he truly fell in love with her during the relationship. As the top boss, Jiang Tao has an obsession with Xiyan, the "sister" he has guarded since childhood, and secretly competes with Ruiyang.
Concept: The complexity of human nature and the power of love