Flower Gu

In an era of frequent warfare, a commoner named Yu Niang is chosen by Lang Yuexuan, the young lord of an enemy nation. He poisons her with a gu and makes her his flower slave. The barbarian youth is skilled in gu and manipulation. Their arrangement is set to last three years, and Yu Niang is forced to go to the enemy nation on a secret mission. She feeds him her blood and cures the gu poison in his body so she can escape the control of her uncle, A Qida. As they spend time together, the two young people from different peoples cross forbidden boundaries and secretly fall in love. Their feelings are discovered by the princess Lang Xingyun, sparking a power struggle within the barbarian nation. The Xuan Dynasty seizes the opportunity to launch a surprise attack. As the two nations go to war, Yu Niang disappears without a trace.

With supreme power in his hands, Lang Yuexuan orders a search for Yu Niang. For the rest of his life, he wants only one answer from her.