Mo Lan, the Mysterious Vein Black Tiger who is weak from undergoing the heavenly tribulation, mistakenly falls into the Gold and Jade Tower. He trades three heart-protecting tiger bristles for seven days of shelter, but gets imprisoned and looted by the shopkeeper Qian Wankui. At death's door, the orphan A Yan spends all of his three years of redemption money to save him. Three days later, the forcibly seized Tiger Soul Spirit Pearl erupts with backlash, the wicked person falls into the abyss, and the kind boy gains the Mountain Lord's gratitude, growing from a bullied little apprentice into the shopkeeper of the Virtue-Guarding Pavilion.