Iron Blood Thirteen Aunt: In Guangzhou during the Republic of China era, a surge of human trafficking leads to the disappearance of legendary martial artist Huang Feihong while protecting the 13th Aunt. Determined to uncover the truth, she goes undercover at a foreign-run school, the hub of the trafficking operation. As she investigates, she uncovers a larger conspiracy and unites the female students to combat the sinister Western forces behind it.