Once a renowned family of poison and hidden weapons, the Sichuan Tang Family has fallen into decline. Born into this legacy, Tang Yeon-myeong develops an unusual obsession with the sword, unlocking memories of his past life—where he had mastered the pinnacle of swordsmanship.

“This time, I just want a peaceful life.”

To stay unnoticed, he must conceal his skills. But with endless obstacles in his path, will he truly be able to live in peace?