A young man is told he's a rare martial arts prodigy and given a book called "Infinite God Demon Body Tempering Manual" to save the world. He pays the con artist double the asking price. Back home, the seemingly fake book glows with power, revealing its true nature. It's no ordinary book; it's a powerful artifact. The phrase "In case of discrepancy between the product and its description, the product shall prevail" doesn't apply to him.