Twenty years ago, the demon Rong Xuan died in Mount Qingya by the hands of Five Lakes Alliances and other heroes. He left behind an armory that could let someone become invincible overnight. His armory could only be opened using the Glazed Armor. A nursery rhyme spread about the Glazed Armor and everyone went searching for it including Prince Jin....

Prince Jin secretly trained assassins in the Window of Heaven to kill officials of the court.He had intentions to revolt. Officer Li, the military governor, wrote a letter about this. Before he could send his letter, his mansion was attacked by a team of assassins. The military governor failed to escape. Instead, a fight broke between his guard and the masked assassin. During the fight, Zhou Zi Shu, Leader of the Window of Heaven, and Zhou Zi Quan the second in command after her brother, revealed to be the persons behind the mask. In the end, Zhou Zi Quan killed Officer Li and asked his daughter, Princess Jing An, to commit suicide. Jing An took out a hairpin from her sleeve and talked about Qin Jiu Xiao, Zhou Zi Shu and Quan's brother, on her dying breath. Zhou Zi Shu and his sister found out that she was there brother's lover...

*First time writting, just go ahead and read oh! There will be spoilers, so read at your own risk~*