Su Wanwan, on the surface, is an unpopular concubine of the Prime Minister's Palace, but in reality:
- "Wuchang", the mastermind behind the world's number one killer organization "Blooded Blade"
- The "Ghost Doctor" with magical medical skills - Xiao Chengyu, a descendant of an ancient weapon-refining family, is a powerful regent. He looks sick and pale, but in fact controls the secret guard "Shadow Pavilion". He was poisoned at a young age, causing cold poison to enter his body, and he died soon. Su Wanwan approached Xiao Chengyu to avenge the destruction of her family, but during the cooperation, she gradually uncovered the mystery of her life experience, and finally joined forces with Xiao Chengyu to crush the treason conspiracy.
