Two friends work as cleaners whose jobs are to clean homes and places where people have died or dead bodies are found. One day, they are tasked with cleaning a house where there were three dead bodies inside. Their job is to clean the corpses that have rotted. When they arrived there, they found that there are strange things happening and then they discover a strange book.。博士用几年的时间研制出了一种隐形药,博士将这一重大发明告诉了自己的助手小燕,不料隐形药的发明传出去以后,引发了一系列意想不到的麻烦事。最为严重的是犯罪分子将药偷去以后,既用来偷银行的钱,又偷博物馆的金器,给社会和公安部门增添了不必要的麻烦。博士最终销毁了隐形药。。