Heavenly Sword and Dragon Slaying Sabre

In the late-Yuan dynasty China, martial art sects and warriors fight for the lost Dragon Sabre which, according to legend, grants its possessor rulership of the world.[4] Yu Daiyan retrieves the sword but Susu's brother Yin Yewang poisons him. Susu arranges to transport the third brother home to be treated but an unknown mercenary cripples him.

Zhang Cuishan watches Tian Ying Sect demonstrate the dragon sabre but Xie Xun snatches it away and takes Cuishan and Susu to a remote island but their ship sinks. Cuishan and Susu arrive at Fire Ice Island. Xie Xun arrives there the next day.

Susu gives birth to a son whom she names Wuji in memory of Xie Xun's son Xie Wuji. After ten years, Cuishan, Susu, and young Wuji leave the island without Xie Xun, who chooses to stay on the island. Cuishan, Susu, and Wuji return to the mainland and travel to Wudang. During the journey, Wuji is captured by one of the Xuan Ming Elders. At Wudang, Daiyan recognizes Susu's voice. Cuishan takes responsibility for the many murders Susu committed in the past and kills himself in front of multiple sects. Sanfeng and Susu rescue Wuji then Susu kills herself. Wuji is poisoned by the toxic chill of the Xuan Ming Divine Palm and collapses.

Miejue and her Emei disciples attack Yang Xiao, who kidnaps Xiaofu. Yang Xiao asks Xiaofu to take care of an orphan girl named Yan'er who has endured abuse for one month. After one month, Xiaofu wants to return to Emei; Yang Xiao tells her Miejue will consider that she and he have something between them and must be killed. Xiaofu tells Yang Xiao the Heavenly Reliant Sword means a lot to Miejue and she tricks Yang Xiao into promising never to see her again. Yang Xiao steals the Heavenly Reliant Sword from its Mongolian owner and returns it to Emei. Xiaofu leaves Emei and gives birth to a girl named Yang Buhui.

Wuji leaves a note to Sanfeng stating the god of mercy admires him and will cure him, then he runs away. Wuji prepares to die but a girl named Zhou Zhiruo saves his life. Zhiruo's father looks for Yuchun. The next day, Zhiruo's father is ambushed, captured, and taken to a market where Wuji and Zhiruo were selling oranges. The soldiers force Zhirou's father to tell them the whereabouts of Chang Yuchun but he tells them he does not know. Sanfeng arrives but Zhiruo's father dies. Yuchun takes Wuji to see Divine Physician Hu Qingniu, who does not want to treat Wuji's cold chill. He feels Wuji's pulse and changes his mind. Wuji studies Qingniu's books and acquires some medical skills.

Miejue defeats Golden Flower Granny. Later, Miejue kills Xiaofu in grief for choosing Yang Xiao over Emei and this is witnessed by Wuji and Buhui. Wuji sends Buhui to her father Yang Xiao, then returns to Wudang. On the way home, Wuji rescues a monkey from some dogs and is injured. The Zhu family tricks him to reveal Xie Xun's location. Wuji jumps off a cliff and Mr. Zhu saves him but they are trapped on a small ledge. Wuji crawls through a narrow tunnel and takes the Nine Yang Divine manual from an ape and masters it. Nine Yang Divine Skill allows Wuji to cure his cold poison.

Mr. Zhu kicks Wuji off the ledge. Wuji lands in a house and breaks both legs. Zhu'er helps him and attacks Jiu Zhen with her spider poison. Emei disciples are guests at Jiu Zhen's home. Emei disciples capture Zhu'er and Wuji.

Zhu'er and Wuji escape but Emei disciples take them prisoners on their way to Bright Peak to exterminate Ming Cult. Wuji has an opportunity to privately speak to Zhiruo when looking for a herb.

Wuji receives three powerful punches from Miejue to save the lives and limbs of Ming Cult prisoners. Shuo Bude captures Wuji and takes him to the throne room. Wuji saves Ming Cult from extermination and reluctantly becomes its leader.

Wuji and Ming Cult set out to bring Xie Xun from the remote island. On the way, they come across Wuji's sixth uncle, Yin Liting, whose joints are broken by Shao Lin's people. The Ming Cult people go to Shao Lin but nobody is there. Wuji rushes to Wu Dang to save him from extermination then uses Taiji Fist and Taiji Swordplay on the Mongolian princess Zhao Min's people.

Zhao Min captures and keeps the six sects in Wan An Si. Ming Cult and a spy within Zhao Min's people save the sects. Miejue refuses to accept Wuji's help and plunges to her death.

When Emei disciples discuss whether Zhiruo or Minjun should be the next sect leader, Golden Flower Granny captures Zhiruo and takes her to Divine Snake Island. Zhao Min ensures she and Wuji are on the same ship as Golden Flower Granny. On Divine Snake Island, Wuji delays his reunion with Xie Xun. Persian Ming Cult attacks Golden Flower Granny. Xiao Zhao and her mother leave for Persia with the Persian Ming Cult people.

One morning, Wuji wakes to find Zhu'er dead and that Zhao Min, the Heavenly Sword, and the Dragon Saber are missing. Wuji, Xie Xun, and Zhiruo return to the mainland.

Mo Shenggu sees Qingshu's attempts to rape Zhiruo and tries to kill him. It results in his own death.

At Youliang's urging, Qingshu tries but fails to poison Sanfeng and is banished from Wu Dang.

Zhao Min lures Wuji away from his own wedding with Zhiruo.

All sects go to Shao Lin for an event. Zhiruo almost kills Wuji and emerges as the champion.

Zhao Min's father surrounds Shao Lin to exterminate the sects. Zhiruo gives the Book of Wumu to Wuji, who wins a few battles, but the tide turns after Zhao Min is killed by her father. Wuji mourns at Zhao Min's tombstone. Many people die, including Qingshu, Minjun, Yin Tianzheng, Xie Xun, many different cult disciples, and many soldiers. Shao Lin's siege ends when the Ming Cult army from Hao Zhou arrives.

It is revealed that Zhao Min is still alive. Her brother persuades her father to spare her and sends her back to Mongolia. But she returns for Zhang Wuji as she tells him she cannot live without him. Zhang Wuji and Zhao Min meet her father and brother for a peace treaty. The meeting goes well until Zhu Yuanzheng kills Zhao Min's father. Zhao Min leaves Zhang Wuji when he chooses his country over her but says he still cares for her and vows to go to Mongolia and find her.

The Ming Cult army has recovered most of China and Yuan emperor Toghon Temür flees to the Eurasian Steppe, where the Yuan remnants establish the Northern Yuan dynasty. Wuji, not wanting to be a sovereign for fear of being corrupted by power, chooses to remain in a righteous path and charges his followers to carry on protecting China against tyranny, injustice, and other threats. Off-screen, Zhu Yuanzhang, having earned a heroic reputation that rivals Wuji's from his battles against the Yuan forces, wins support from his subordinates and allies, and becomes the Ming dynasty's founder, the Hongwu Emperor.

In Mongolia, Wuji gets to be together with Zhao Min.

• Zeng Shunxi as Zhang Wuji (张无忌)
  • Han Haolin as Zhang Wuji (child)
  • Lu Zhanxiang as Zhang Wuji (youth)
• Chen Yuqi as Zhao Min (赵敏)
• Zhu Xudan as Zhou Zhiruo (周芷若)
• Kabby Hui as Xiao Zhao (小昭)
• Cao Xiyue as Yin Li / Zhu'er (蛛儿)
• Kathy Chow as Miejue Abbess (灭绝师太)
• Zhang Yonggang as Xie Xun (谢逊)
• Zhang Chaoren as Song Qingshu (宋青书)
• Guo Jun as Song Yuanqiao (宋远桥)
• Ethan Li as Zhang Cuishan (张翠山)
• Chen Xinyu as Yin Susu (殷素素)
• Lin Shen as Yang Xiao (杨逍)
• Wu Jingjing as Ji Xiaofu (纪晓芙)
• Sun Anke as Yang Buhui (杨不悔)
• Wang Deshun as Zhang Sanfeng (张三丰)
• Zong Fengyan as Fan Yao
• Louis Fan as Cheng Kun/Yuan Zhen (成昆) / (圆真)
• Xiao Rongsheng as Yin Tianzheng (殷天正)
• Yu Bo as Yang Dingtian (阳顶天)
• Tao Luoyi as Ding Minjun (丁敏君)
• Zhao Yingzi as Yellow Robed Maiden

The drama was filmed from January 20 to June 14, 2018.[5][6] Filming took place at Yandang Mountains.[7]

Kathy Chow, who played Zhou Zhiruo in the 1994 adaptation of The Heaven Sword and Dragon Saber, plays Zhou Zhiruo's teacher, Miejue.[3] Guo Jun, who played Zhang Songxi in the 2009 adaptation, plays Song Yuanqiao in the series.[8]

The drama was criticized for its slow-motion action scenes.[9][10] Among the cast, Lin Shen, and Zhu Xu Dan were notably praised for their acting.[11][12][13]

• Daojian Rumeng (刀劍如夢; A life of fighting is but a dream) performed by Wakin Chau
• Liangliang Xiangwang (倆倆相忘; Forgetting Each Other) performed by Winnie Hsin
• Cǐshēng Wéini (此生惟你; This Life is only You) performed by Zhou Shen
• Cizhi Xin (赤子心; Pure Heart) performed by Li Qi
• Hewei Yongheng (何为永恒; What Is Eternity) performed by Hu Xia