Episode 12 recap: Han Feng occupied the Magma Valley, and Xiao Yan encountered Xiao Yi Xian again.

Xie Shan escaped, and She Cai Lin chased after her. However, Xiao Yi Xian arrived shortly after and used a drug to drug Xiao Yan. She was about to kill him but realized it was Xiao Yan. Xiao Yi Xian recalled their past together and couldn't bring herself to harm him. She hid Xiao Yan, but the valley master arrived and pressured her to kill Xiao Yan. Only then would he provide them with an antidote to alleviate the effects of the poison in her and Xie Shan's bodies.

Seeing Xiao Yi Xian hesitate, the valley master suddenly turned around, revealing himself as Han Feng. He bitterly told Xiao Yi Xian about his deep-seated hatred for Xiao Yan, although he himself was still recovering from serious injuries. Xiao Yi Xian said that killing Xiao Yan would be the last thing she did for him and pleaded for him not to go back on his word, helping her and Xie Shan remove the toxins and escape this place.

She Cai Lin caught up with Xie Shan and quickly subdued her, but Xie Shan informed her that she wasn't the only one trying to kill Xiao Yan. She Cai Lin was taken aback by the revelation. At that moment, Xiao Yan woke up, and Xiao Yi Xian gave him a pill and urged him to leave quickly as the Magma Valley was filled with toxins. Xiao Yan thanked her for saving him and asked for her name.

However, Xiao Yi Xian refused to tell him her name. Xiao Yan felt like he had seen her somewhere before. Even though he couldn't see her face, he would never forget her aura. Therefore, Xiao Yan chose to trust Xiao Yi Xian unconditionally. Just as he was about to drink the pill, She Cai Lin arrived and knocked the medicine out of his hand. She told Xiao Yan that this poisonous woman was in cahoots with Xie Shan.

Xiao Yan had already recognized Xiao Yi Xian. Several years ago, when he was traveling in Qingshan Town, he contracted a plague and no one dared to help him except Xiao Yi Xian, who cured him of his illness. Due to Xiao Yi Xian's cursed poison body, she was shunned by society. After Xiao Yan recovered, he left Qingshan Town, only to find that the townspeople had surrounded Xiao Yi Xian, intending to kill her because her poison would infect others, and anyone who got close to her would inevitably meet their demise.

Worried, Xiao Yan returned to save her. Xiao Yi Xian revealed her background to Xiao Yan, explaining that her mother died from her poison body when she was ten years old, which led to her being seen as a monster. Xiao Yan grabbed her hand and said he would be the exception this time.

Xiao Yan risked everything to rescue Xiao Yi Xian and stood in front of her, shielding her from the random arrows being shot at them. Unable to control her emotions, Xiao Yi Xian prepared to activate the toxins in her body to kill them all. Xiao Yan hurriedly stopped her by holding her hand, saying that he wasn't saving them but saving Xiao Yi Xian. He was afraid that after doing such a thing, the kind-hearted Xiao Yi Xian would suffer eternal pain.

Xiao Yan expressed that he would take Xiao Yi Xian and leave this place to live a different life in the outside world. He wanted to become a top-tier alchemist and help Xiao Yi Xian remove the toxins from her body. After reminiscing about their past, both Xiao Yan and Xiao Yi Xian were filled with excitement. Xiao Yi Xian urged him to leave quickly before the valley master arrived, as they would be trapped otherwise.

Upon learning that the valley master was Han Feng, Xiao Yan was filled with indignation. He realized that Xiao Yi Xian was being coerced and held captive by Han Feng. At that moment, She Cai Lin entered with Xie Shan in custody. Xiao Yi Xian turned around and held a knife to Xiao Yan, forcing She Cai Lin to release Xie Shan.

Xiao Yan trusted Xiao Yi Xian and allowed She Cai Lin to free Xie Shan. Xiao Yi Xian hurriedly left with Xie Shan. Xiao Yan understood that Xiao Yi Xian didn't want him to witness her poisoning symptoms. She Cai Lin warned him not to trust Xiao Yi Xian, suggesting that it might be a plot by Han Feng. However, Xiao Yan chose to believe Xiao Yi Xian unconditionally and drank all the medicine she had given him.

Xie Shan and Xiao Yi Xian returned to their dwelling, and Xie Shan angrily accused Xiao Yi Xian of disregarding her own life for the sake of Xiao Yan. Xiao Yi Xian reaffirmed that Xiao Yan had once saved her life, and she couldn't bring herself to harm her savior.

Angrily, Xie Shan stated that she had brought Xiao Yi Xian out from the mercenary group and brought her to this Magma Valley, where they had been obedient to the valley master and relied on the pills provided by him to alleviate the effects of toxins and poison. They were of the same kind. Xiao Yi Xian, in anguish, said that without Xiao Yan, she would not have come to this Magma Valley. If there were ever a need in the future, she would also risk her life to save Xie Shan.

Seeing Xiao Yi Xian's unbearable pain, Xie Shan hurriedly went to find the valley master for medicine. After Xiao Yan took the pill, he suddenly collapsed, startling She Cai Lin. It turned out that Xiao Yan had pretended to scare her. Indeed, Xiao Yi Xian hadn't lied to him. The medicine she gave him was meant to dispel the toxic miasma of the Magma Valley. Xiao Yan urged She Cai Lin to quickly take the medicine and then took action.