Lin Yu was a penniless young man. By chance, he found a jade pendant engraved with mysterious runes at an antiques market. The pendant seemed to hold some kind of power. That night, it began to glow faintly, guiding him to an abandoned old mansion. The mansion was eerie and terrifying. As soon as Lin Yu stepped inside, he triggered a mechanism. The floor suddenly collapsed, and he fell into an underground passage. At the end of the passage was an ancient tomb chamber. A massive stone coffin stood inside, its runes strikingly similar to those on the jade pendant.