In the sixth year of Yongle (1408), when Zheng He's fleet was about to sail to the Western Ocean for the second time, a strange phenomenon of "white rainbow piercing the sun" appeared in Nanjing. The sudden appearance of Zhu Wenkui, the orphan of Emperor Jianwen, revealed the bloody truth that had been sealed for eight years after the Battle of Jingnan. Three forces: Ji Gang, the commander of the Jin Yiwei, Shen Qingyi, the daughter of an old minister of Jianwen, and Lu Jiuyuan, a mysterious wealthy businessman, are engaged in the ultimate game of the Ming Dynasty's national destiny in the vortex of the Maritime Silk Road and the court's intrigues. When Zheng He's treasure ship crossed the ocean, blood oozed from the copper jars of the Forbidden City. This prosperous Yongle era, built with lies, was being torn apart by a shocking secret...