The human body's cells never rest for long; there's always something fresh to accomplish and learn every day. At least, that's how Hakkekkyuu U-1146 feels as he dashes back and forth, looking for infections that may hurt the body. Despite the dangers of his job, it's all worth it to safeguard Sekkekkyuu AE3803, the platelet crew, his fellow neutrophils, and the other cells he encounters along the road. In his most recent pathogen-hunting escapades, Hakkekkyuu U-1146 finds that even essential cells may make mistakes, and that not all germs are harmful. Everyone has hard days, but everything works out in the end when their teammates have their back. At the end of the day, it's just another ordinary day.