Three years ago, his family fell into a mysterious disaster. He was the only one who survived, but was accepted by his beloved and became the mentally retarded son-in-law of a magical family. Now, he accidentally obtained an ancient jade scroll, which contained endless wisdom. He awakened from ignorance and transformed into a being known as the "Emerald Saint". He vowed to take back the shame and loss of the past one by one with the sharp edge of a wise man!
