A mad scientist grandfather invents a genetic transformation machine and his 4 year old grandson accidentally turns his body into that of a 30 year old man. Baby Bobby escapes and runs around town as his siblings try to catch him before their parents get back from vacation AND before the bad guys get to him first. The machine is worth a lot of money and they only have a day before the machine loses its capabilities to change baby bobby back.《补锅打铜锣》由《打钢锣》、《补锅》两剧构成。前者写收获季候，出产队派蔡九打锣通知各户关好鸡鸭，不要放它们出来吃队里的谷子。林年夜娘明知故犯，蔡九对之进行教育，使她熟悉毛病。后者写刘年夜娘对补锅行业缺少准确熟悉，不肯将女儿嫁给补锅匠，后经事实教育，进步了熟悉。