In this new spinoff of the hit manga, a newbie Red Blood Cell is one of 37 trillion working to keep this body running. But something's wrong! Stress hormones keep yelling at him to go faster. The blood vessels are crusted over with cholesterol. Ulcers, fatty liver, trouble (ahem) downstairs... It's hard for a cell to keep working when every day is a CODE BLACK!
The cells that keep this body running are doing their best, but there's only so much they can do against the abuse of an unhealthy lifestyle. A simple case of athlete's foot is one thing, but a flood of caustic acid caused by a stomach ulcer is enough to make any cell think about a career change. It turns out that there's only so much these hard-working cells can handle before the consequences turn as serious as a heart attack...