The Royal Noble Academy welcomes three mysterious transfer students: Mu Rongqing, Su Yumo, and Fu Rongxue. They appear to be wealthy heiresses, but in reality they are key members of the fearsome underworld group known as the Queen's Guard. Tasked with secretly investigating the criminal forces on campus, they meet their destined rivals and lovers: the three founders of Shadow, ranked second in the underworld. They are the stern student council president Shang Gonghan, the playboy Ouyang Xu, and the gentle Huo Chen.
When King, the legendary queen of the underworld, Mu Rongqing, hides her sharp edge and poses as an ordinary student, and the founders of Shadow conceal their identities and live as students, a game of disguises and true feelings begins. From chance encounters in the library to clashes at dances, from working together on club activities to standing side by side in times of crisis, the six find their relationships shifting amid suspicion and attraction. As their investigation deepens, they uncover a vast conspiracy hidden behind the Royal Academy, one entangled with rival underworld factions vying for power. When danger strikes, they have no choice but to set aside their prejudices and join forces against their true enemy. In this game of lies and genuine feelings, when will their secrets be revealed? When the queen of the underworld meets her shadow knight, who is the real hunter in this game?
