The World Caught A Germ portrays the changed lives of a little girl, Penny, and her best friend, Sam. Penny's parents are on the front line of the Covid-19 pandemic, meaning she is at school learning about social distancing through the term bubble space and the importance of hand washing. Sam is staying at home with his Dad learning about and practicing self-isolation. Penny and Sam are using technology to stay in touch with one another, and for Sam to still have contact with his teacher and class.