When Mr. Luo was fighting crickets in the mansion, his black cricket won a lot of silver for him. He was so proud that he boasted about the value of the baby. His words were remembered by Zhang Yu, a carpenter who worked next door. The servants put the jar containing the black cricket on the table, and Zhang Yu, who couldn't help being curious, wanted to see the appearance of the "baby", and didn't want the black cricket to escape if he was not careful.

罗公子在府内和人斗蛐蛐时，他的黑蛐蛐大获全胜帮他赢了很多银子，得意洋洋的他自夸起宝贝的身价来，他的话被在隔壁做活的木匠张煜记在了心里。下人将收有黑蛐蛐的罐子放在几案上，止不住好奇的张煜想一睹“宝贝”的模样，不想一不小心，黑蛐蛐逃之夭夭。 　　将张煜毒打一番后，罗公子限他三日之内找回黑蛐蛐，否则赔银子1000两。张煜左思右想一番，动了轻生的念头。佛法无比的济公及时赶到将张煜救下，并言只用张煜身上的三文钱，就可帮他把麻烦解除。