During the severe drought in Guangxu, beggar A Tu sold himself to the Zhou family to protect a baby. He stayed at the coffin at night and was attacked by a pack of wolves. He risked his life to protect the body and became a suspect. The empty coffin was missing, his body was covered with blood, and his shroud was the evidence. He was accused of cannibalism and could not explain himself, but he swallowed charcoal to prove his innocence. Many years later, the abandoned baby grew up to be a famous widower. Using the reasoning behind his teeth, he uncovered an injustice in troubled times and restored the dignity of his life to the beggar.
