Ep. 13: White Blood Cell investigates the missing blood cells while Red Blood Cell persists with oxygen delivery.
Aired on September 30, 2018

White Blood Cell (Neutrophil) arrives at the emergency site to assess life-threatening injuries but finds the blood cells he protects are absent. Massive blood loss has expelled many cells through an open wound, causing the situation to become increasingly critical. Despite the severe hemorrhage, Red Blood Cell and her new trainee remain determined to continue transporting oxygen. Their goal is to save their world and their colleagues even as the end approaches. The narrative questions what destiny awaits these cells as their environment deteriorates rapidly due to the ongoing blood loss and the disappearance of their comrades.
Episodes
- Ep. 9 · Killer T Cell disrupts Helper T Cell during a drill, revealing their shared past at Thymus School.
- Ep. 10 · Red Blood Cell encounters a masked monocyte while fleeing from Staphylococcus Aureus bacteria.
- Ep. 11 · The body suffers from heatstroke as internal temperatures rise dangerously high.
- Ep. 12 · Red Blood Cell Takes on New Training Duties Amidst Body Changes
- Ep. 13 · White Blood Cell investigates the missing blood cells while Red Blood Cell persists with oxygen delivery.
- Ep. 14 · Catching the Common Cold