The movie focuses on the battle of Cheolwon, where the 63rd Army of the Chinese People's Volunteer Army (CPVA) was ordered to enter the battlefield of Cheolwon in May 1951, just after a month-long battle, to fight against four divisions of the United Nations Army (UNA). The volunteers fought with bloodshed and finally brought the enemy to the negotiation table.

一九三七年八月三十一日淞沪会战中，姚子青奉命率部五百余人守卫宝山县城。日军为扩大登陆地域，对宝山进行了海陆空协同的疯狂攻击。在装备落后，地势不利，没有援军的情况下，智勇双全的姚子青带领全营以寡敌众坚守孤城，灵活运用战术战略，从主动出击攻袭敌军到固守阵地顽强抵御，七日内击退了日军一次又一次的进攻，全营五百余人先后战死沙场。九月七日日军破城，姚子青率残部二十余人在城内展开激烈巷战，最终壮烈殉国。

Fan Xian, born in the Southern Qing empire with memories of the 21st century, is the illegitimate son of the Minister of Finance. Raised by his grandmother after his mother, inventor Ye Qing Mei, was killed, he learns martial arts and poison techniques under her bodyguard, the blind Wu Zhu.

After surviving an assassination attempt, Fan Xian goes to the capital to uncover the truth about his mother and his memories. There, he falls in love with Lin Wan Er, the woman the emperor has chosen to be his wife. Caught in political intrigue, Fan Xian must confront his identity and purpose.