When the dark evil immortal descends from the heaven, and the mysterious underground ghost palace was revealed, a strange herb named the Black Tea suddenly took Chang'an City by storm. However, no one knows whether it is a healthy medicine or one that could harm people. Cases of missing brides in Chang'an City began occurring one after another, which seems to be inextricably linked to the black tea... Ling Feng, general of the Jin Wu guards was tasked to investigate these cases. On his journey, he meets his strongest opponent in Su Wu Ming, the disciple of Di Ren Jie. The two of them work together to solve these mysterious cases.

The story of Mi Yue (Queen Dowager Xuan), the first stateswoman in the history of China. Mi Yue was a young princess who lived in the Kingdom of Chu during the Warring States period. She was sent to Qin as a concubine and part of her sister Mi Shu's dowry, separating her from first love Huang Xie. King Ying Si passes away while his sons are still battling for the throne, and ultimately, Ying Dang comes out as the successor. Mi Yue is banished to Yan with her son Ying Ji. However, Ying Dang suddenly dies, leaving Qin in a state of chaos. Mi Yue enlists the help of the "barbarian" Yiqu army, successfully returning to Qin, suppressing political revolts and instates her son Ying Ji on the throne. Mi Yue goes on to become the first Empress Dowager (Empress Mother) in China’s history.

Towards the end of the Warring States Era, the States of Qin and Zhao are engaged in a lengthy battle. Li Hao Lan, daughter of the Censor-in-chief of Zhao, is forced out of her own home after being set up by her stepmother. Having nothing to her name, she is sold as a slave and purchased by Lu Buwei, who is cleverly able to marry Hao Lan to Ying Yiren, a Qin royal who resides in Zhao as a hostage. However, Hao Lan and Buwei's presence in the Zhao palace ignites a dangerous battle, as they rely on their wits to evade Princess Ya’s devious schemes.

Ping An is an autistic teenager who gains recognition for being a badminton prodigy. Zihao is his younger brother and a fellow badminton player. Xiao Na is a bright and cheery young woman who helps out at her grandpa's badminton court for the summer. She gets close to both brothers and becomes attracted to Zihao. However, their journey is not as smooth-sailing as they'd hope and the two brothers are pushed to a difficult crossroad.