Tang So-hwa is a genius of poison arts who knows every poison under the heavens, known as the 'All-Poison Disperser.' After her clan is completely annihilated due to the betrayal of her husband—the head of the Namgung Clan—So-hwa, the sole survivor, wipes out the Namgung Clan with poison and takes her own life. She closes her eyes, having finally achieved her long-awaited revenge, but only for a moment... When she opens her eyes, she has returned to her seventeen-year-old self during the golden age of the Sichuan Tang Clan!

Peace in the Central Plains? The loyalty of the Murim Alliance? She couldn't care less. She only wants to resolve incidents to protect her family, but for some reason, the Sichuan Tang Clan is becoming the center of righteousness...

'No, I'm telling you, I just need to save my clan!'