Plot:

The story follows the world of a human's body which is represented as cities with roughly 37.2 trillion anthropomorphic cells who work together endlessly daily to run their world. Everyday, they struggle to remove and resist against pathogenic cells such as germs and bacteria from invading the body.

A ditsy red blood cell who is new to her job, AE3803 and a ruthless white blood cell who is a part in the immune system, U-1146 are featured in the story as protagonists. As a red blood cell, AE3803 transports goods such as oxygen and nutrients. On the other hand U-1146 patrols the blood vessels and destroys threats.

Anime Friday: 1 November - 7 November 2023

Cells at Work: Episode 1 Summary

"Pneumococcus" 

Inside a human body, a red blood cell, named AE3803, is rescued from a sudden attack from a group of Pneumococcus bacteria by a white blood cell, named U-1146. 

Later, as AE3803 tries to find her way to the lungs to make the delivery, she discovers one of the bacteria has escaped and is planning an attack on the lungs, so she and U-1146 accompany each other to the lungs to pursue it. 

Upon reaching the lungs and parting ways with U-1146, AE3803 discovers Pneumococcus had been hiding in her package the entire time, waiting to target red blood cells for their nutrients. 

However, U-1146, who had caught onto the bacterium's plan, arrives in time and lures the bacterium into a trap, where he is ultimately sneezed out of the lungs.