Rumors of a treasure map from the ancient Shu Kingdom hidden in Ximianqiao Prison attract various factions and pressure General Wu, the governor of Chengdu. To protect the treasure, students from a local academy devise a daring plan, with Xu Jiaxing faking a crime to infiltrate the prison. However, his protective older brother, Xu Jiahe, takes his place. As Xu Jiahe discovers his brother’s true intentions, he becomes embroiled in the struggle for the map. Facing perilous challenges and hidden identities, the brothers join forces with fellow patriots to locate the treasure map and safeguard their nation's heritage.