In 1910s China, nineteen year old Xie Xiang follows in her deceased brother's footsteps and enrolls in military school disguised as a man. She befriends her fellow cadets and and earns the respect of her instructors during the intense training. However, when the unfortunate arrival of the Imperial Japanese troops creates a web of distressing conspiracies, the batch and their allies are forced to prove their courage and resilience.
The whole family of the bride Yuan Rui was killed while in the wedding room, but she was saved by a masked man. A year later, Roy learns from information dealer Bao Dating that his father killed a thief in order to save people. With Bao Dateng's help, Rui searched for the enemy's weakness and set foot on the path of revenge.
