One newcomer red blood cell just wants to do her job. Between bacteria incursions and meeting a certain white blood cell, she's got a lot to learn.

The human body consists of approximately 37 trillion cells. These cells are hard at work every day within a world that is your body. From the oxygen carrying Red Blood Cells to the bacteria fighting White Blood Cells, Get to know the unsung heroes and the drama that unfolds inside of you.—Crunchyroll