Based on the novel by Hong Kong writer Louis Cha. The story of a good-looking martial artist who marries his teacher.
A Mongol prince named Fok To is interested in Ancient Tomb School skills and approaches Chiu Chi-King to make him steal the map of the tomb from Chuen-chan's archives.
Yeung Gor makes fun of Chuen-chan priests. First, he dresses as a Tiger. Then, he impersonates Wong Chong-yeung. Kwok Ching and Wong Yung come to Chuen-chan to visit Yeung Gor. However, they are told that Yeung Gor has left and joined the Ancient Tomb School.
Yeung Gor befriends a Mongolian named Yehlut Chai. A Jin princess named Yuenngai Ping comes to the Yehlut family to take revenge for her family. However, Yeung Gor immediately recognizes that Yuenngai Ping and Yehlut Chai are actually also in love with each other and tries to help them get together.
Kwok Ching captures Yeung Gor and intends to bring him to Chuen-chan to clarify what happened to Yeung Gor when he was a kid. Later, the Mo brothers bully Yeung Gor and releases him to fight with the Mo brothers and Kwok Fu, but Yeung Gor beats them and runs away. Yeung Gor meets Chow Pak-Tung and they go to Chuen-chan. At the gate, they are stopped by Chiu Chi-king, who doesn't recognize who Chow Pak-Tung is. Yeung Gor bullies Chiu Chi-King and returns to the Ancient Tomb. Yeung Gor finds a perfect place nearby to practice the Maiden Sword energy cultivation. However, their practice is disturbed by a dispute between Chiu Chi-King and Wan Chi-ping.
Lee Mok-Sau visits the Ancient Tomb School with her apprentice, Hung Ling-po. After they get into a skirmish with Siu-long-lui and Yeung Gor, Siu-long-lui closes all exits from the tomb and traps all four of them with no way out.
Siu-long-lui accidentally finds a secret way out of the tomb and all of them manage to get out of the tomb. Yeung Gor finds Auyeung Fung again, who closes Siu-long-lui's acupoints and teaches Yeung Gor some martial skills. While they are away, Wan Chi-ping blindfolds and rapes Siu-long-lui. Siu-long-lui assumes it is Yeung Gor, but since "Yeung Gor" seems to not understand what happens, Siu-long-lui runs away. Yeung Gor then wanders around looking for Siu-long-lui.
Yeung Gor meets Luk Mo-sheung, who is being chased by Lee Mok-sau. He helps her get away from her former teacher.
Yeung Gor meets Yehlut Chai again, who turns out to also be Chow Pak-Tung's secret apprentice.
Luk Mo-sheung is detained by Kwok Fu and the Mo brothers, who think she will lead them to Lee Mok-sau. Lee Mok-sau then detains both Luk Mo-sheung and Yeung Gor. Luk Mo-sheung manages to escape and tries to get help from Kwok Ching.
Yeung Gor and Luk Mo-sheung are set free by Auyeung Fung. Fok To's teacher, Kam-Luen-Fat-Wong, is planning to become the leader of the martial world.
Yeung Gor meets Hung Chat-Kung on top of Mount Wah. Auyeung Fung stumbles on them, and he fights with Hung Chat-Kung day and night, interrupted only by Yeung Gor cooking meals for them.
Both Hung Chat-Kung and Auyeung Fung get injured deeply. Each of them teaches Yeung Gor their best martial skills so he can show the other. They both die and Yeung Gor buries them.
Kwok Ching hosts a hero convention to form an alliance against Mongol invasion. While Yeung Gor is staying with Kwok Ching's family, Kwok Fu falls in love with him.
Kwok Ching plans to marry Kwok Fu to Yeung Gor. Lo Yau-Keuk takes over leadership of Beggars' Gang from Wong Yung.
Kam-Luen-Fat-Wong crashes the hero convention and demands to be anointed the leader of martial world. Siu-long-lui comes to the convention and finds Yeung Gor.
With the help of Siu-long-lui, Yeung Gor succeeds in driving away the Mongolians and becomes a hero. However, when he announces his intention to marry his teacher, he is shunned by the martial world.
Yeung Gor and Siu-long-lui meet and help another student-teacher couple who are condemned by society. Yeung Gor goes to Chuen-chan to ask Yau Chu-kei who killed his father, Yeung Hong.
The student-teacher couple are stoned to death by their neighbors. When she sees this, Siu-long-lui becomes upset. Yeung Gor falls into a valley and is saved by Ching Ying.
Ching Ying's cousin, Luk Mo-sheung, joins her but she is also still chased by Lee Mok-sau. When Lee Mok-sau comes, they are saved by Wong Yeuk-shi.
Sor-ku tells Yeung Gor that Kwok Ching and Wong Yung "were the ones who killed" Yeung Gor's father. He then joins forces with Kam-Luen-Fat-Wong because they both want to kill Kwok Ching. While practicing martial skills, Siu-long-lui is injured and is saved by Kungsuen Chi from Passionless Valley.
Chow Pak-tung is detained by people from Passionless Valley for wreaking havoc there. Yeung Gor and the Mongolian mercenaries follow him there. After losing hopes to see Yeung Gor again, Siu-long-lui accepts Kungsuen Chi's marriage proposal.
Yeung Gor meets Siu-long-lui and they try to leave but Kungsuen Chi doesn't let them go and imprisons Yeung Gor. He also poisons him with Love Flowers. Kungsuen Chi's daughter, Kungsuen Luk-Ngok, helps Yeung Gor escape but both of them fall into a trap door.
Kungsuen Luk-Ngok meets her mother, Kau Chin-Chat, who has been trapped underground by her husband for years. Together, they gatecrash Kungsuen Chi's wedding to Siu-long-lui.
Kungsuen Chi fights against Yeung Gor but is poisoned by Kau Chin-Chat and runs away. Kau Chin-Chat gives Yeung Gor half of the Love Flower antidote - which in fact hastens the effect of the poison by double - and promises him the other half when he brings her the heads of Kwok Ching and Wong Yung.
Yeung Gor goes to Sheung-yeung with Siu-long-lui to kill Kwok Ching. The Mo brothers try to infiltrate the Mongolian camps and kill Kublai. They are arrested, so Kwok Ching and Yeung Gor try to free them.
Kwok Ching tells Yeung Gor what really happens when Yeung Hong died. Yeung Gor changes his mind about killing Kwok Ching and they return to Sheung-yeung.
Wong Yung gives birth to twins, a girl and a boy. Siu-long-lui takes the baby girl, but the baby is then taken by Lee Mok-sau, who thinks it's Siu-long-lui's baby with Yeung Gor.
Yeung Gor meets a giant condor who takes him to Tok-ku-yau-pak's tomb. The Mo brothers fight each other in the woods to determine who gets to be with Kwok Fu. Yeung Gor stops their fighting.
The Mo brothers stop fighting each other, but when they see Lee Mok-sau they try to take revenge on her. Lee Mok-sau throws Icicle Needles at them. Yeung Gor, who thinks he is going to die anyway, sucks the poison out of their blood and gets more injured than before. Siu-long-lui finds out that Wan Chi-ping raped her.
Yehlut Chai tries to assassinate Kublai and is almost discovered but is saved by Chow Pak-tung. Chow Pak-tung and Siu-long-lui are trapped in a cave-in by Kam-luen-fat-wong and Chiu Chi-king.
Yehlut Chai goes to Sheung-yeung to meet Kwok Ching. Reverend Sindu goes to Passionless Valley to find the antidote to Love Flower. In a fit of rage, Kwok Fu chops off Yeung Gor's left arm.
The giant Condor treats Yeung Gor's injury and trains him in Tok-ku-yau-pak's sword martial arts. Wong Yung meets Lee Mok-sau who is still carrying the baby Kwok Sheung.
Wong Yung fights with Lee Mok-sau, but the baby is stolen by Yeung Gor. Wong Yung then joins forces with Lee Mok-sau to find Kwok Sheung. Chiu Chi-king wrestles the title of Chuen-chan abbot from Wan Chi-ping and collaborates with the Mongolians.
Chuen-chan elders come out of meditation to retake the monastery from the Mongolians. Siu-long-lui arrives to kill Wan Chi-ping, but he feels so guilty that he commits suicide. Siu-long-lui is accidentally injured by Chuen-chan elders while they are fighting against Kam-Luen-Fat-Wong. Yeung Gor finds Siu-long-lui and they get married.
Yeung Gor and Siu-long-lui go back to the Ancient Tomb. Chiu Chi-king is killed by Chuen-chan elders for treason.
Lee Mok-sau goes into the Ancient Tomb, followed by Mo Sam-tung, the Mo brothers, Kwok Fu, and Yehlut Chai. Kwok Fu mistakenly throws poison darts at Yeung Gor and Siu-long-lui.
Yeung Gor and Siu-long-lui retreat to a remote hut. They are visited by Reverends Yat-tang and Tsz-yan (Kau Chin-yan). They all go to Passionless Valley to seek the antidote for Yeung Gor.
While trapped in a Love Flower formation, Lee Mok-sau uses Hung Ling-po to escape and kills her in the process. Wong Yung also comes to Passionless Valley and Siu-long-lui returns Kwok Sheung to her. Kau Chin-Chat tries to make Tsz-Yan kill Wong Yung.
Kungsuen Luk-Ngok secretly gives Yeung Gor a map of where Reverend Sindu is detained so Yeung Gor can save him. She also poisons herself with Love Flowers to get her the antidote from her mother.
Siu-long-lui fights Kungsuen Chi to get the antidote for Yeung Gor, but Yeung Gor throws it to the bottom of the Passionless Valley because it's not enough for both of them. Wong Yung talks Siu-long-lui into convincing Yeung Gor to take Heartbreak Grass to cure himself. Siu-long-lui then writes a note to Yeung Gor to meet her in 16 years, then disappears.
Sixteen years later, Yeung Gor meets the adult Kwok Sheung. They convince Chow Pak-tung to meet with Ying-ku. After being forgiven by Chow Pak-tung and Ying-ku for killing their son, Tsz-Yan dies in peace.
Or Chun-Ngok tells Yeung Gor the real story of Yeung Hong. Lo Yau-Keuk is killed and the Dog Beating Staff is stolen by Fok To.
Beggars' Gang holds a competition to choose their next leader. Yeung Gor gives Kwok Sheung her birthday present by killing many Mongolian soldiers and keeping Sheung-yeung safe. Fok To - in disguise as a beggar using the alias "Ho Sze-ngo" - is killed by Dayiba.
Kwok Sheung is kidnapped by Kam-luen-fat-wong. Wong Yung, Ching Ying, and Luk Mo-sheung go to Passionless Valley to look for Kwok Sheung and Yeung Gor. On their way, they meet Chow Pak-tung and Reverend Yat-tang.
Kam-luen-fat-wong is detained by Chow Pak-tung, but while the others are away, Kwok Sheung is tricked into releasing him. Yeung Gor leaps to the bottom of Passionless Valley and finds Siu-long-lui.
Kwok Sheung is used as leverage against Kwok Ching so he would surrender Sheung-yeung to the Mongols. Wong Yeuk-shi comes and leads the Sung army to repel the Mongols. Yeung Gor saves Kwok Sheung and kills Möngke Khan.