Bow posts on Facebook her views on vaccines. She gets sucked into the debate with other friends on Facebook and becomes frustrated with their views.

The CDC attempts to find a solution for a worldwide epidemic. However, it is easier said than done because the vaccine must go through an extensive process before it can be released to the public.

Louis Pasteur is remembered for his remarkable breakthroughs in the causes and preventions of diseases. This clip shows his successful vaccination of animals and his interest in replicating it for humans.

A nurse enlists Andy to help her get all members of the town vaccinated. Some are reluctant.

Beakman explains how leaves lose chlorophyll using a cartoon video. Then he explains the role of chlorophlyll in photosynthesis verbally. To further demonstrate, Beakman acts like the "chef" chlorophyll that provides food for the plant.