Rick sends Morty to Anatomy Park so that he can find Doctor Bloom and help save Reuben's life from within his body. As Morty navigates through Anatomy Park, he finds body parts, such as the spleen and pancreas, along with red blood cells. These bodily components are illustrated in an excellent manner.
Rick and Morty ditch their responsibilities and spend some time at Blips and Chits. While there, they play Roy, a virtual reality simulation game in which you play as a person named Roy, who lives a totally normal life.
The group escapes from hepatitis B and enters Alveoli Forest, where they encounter the bronchial tubes, alveoli, and the disease, tuberculosis. Dr. Bloom explains that the human has latent tuberculosis, as the disease is usually found in many people's lungs but is not active. He changes his opinion, however, when he sees that tuberculosis bacteria has escaped from its inactive state.
The group takes a boat ride through the small intestine, where the workers are not only singing about the intestine but are also part of an assembly line that illustrates the small intestine's function: the digestion and absorption of food.
While in the middle of its boat ride, the group encounters the sexually transmitted infection, gonorrhea. Before destroying gonorrhea with a lit match, Poncho alludes to a symptom of the infection: a burning sensation during urination.