After introductory intertitles a very dirty hand is seen. It is implied that this hand became infected after surgery due to staphylococcus. A microscopic shot of staphylococcus microbes is seen. The intertitles give a brief history of the study of infection of wounds. The intertitles state that modern methods aim to exclude bacteria altogether. This method is known as asepsis. A surgeon is seen putting on gloves, handling surgical instruments with forceps and instruments are seen being sterilised. Instructions on how to sterilise surgical instruments are given.