Sangun, the tiger lord of Baek Mountain, was living a peaceful life until a young, white-haired girl named Choa visits his cave, claiming to be his bride. Sangun immediately realizes that Choa is a descendant of the White-blooded Demon Beast, a dangerous creature feared by all spirits and beasts. He tries to send her away for fear of the dangers she will bring, but changes his mind upon discovering that she has nowhere to go. Unfortunately for him, this marks the beginning of his hardships…
One day, Joo Kang-hyun, a stranger who fell into the world of martial arts, rose to the position of Heavenly Demon after going through countless hardships. However, he always missed his hometown, the 21st-century Republic of Korea. He thought he would return to his hometown once, but instead, he regressed to the past. Gosh… The Heavenly Demon, went back in time! In order to save the Youngrae Tavern which was on the verge of bankruptcy, he cooked delicious Jajangmyeon and Jjamppong!
The story begins when late at night, in a noisy gambling den, a gambler secretly stakes his family's treasured heirloom, the Seven Stars Sword, which is said to have the power to control demons! Shortly after, the apostle of the Divine Moon Sect, the Sichuan Overlord of the Four Heavens, appears out of nowhere, turning the gambling den into chaos and leaving bodies scattered.The murim's dedicated arrest agency, Inryeong Unit, is dispatched to the scenes of these mysterious cases.
Yong Hwarin, debilitated by illness and weakness as the heir to the Tianzhong clan, ultimately gave up the path of martial arts and lived as a merchant after marrying into another family.
Carrying his regrets until the time he met his end, he unexpectedly travels back to the past he thought he would never revisit…!
Returning to the time of his lowest point, he swears to his shattered heart that his fate will be reborn through his own hands.
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