We follow a blood donation bus on its journey from town to town in Hokkaido Prefecture. Japan as a whole faces a chronic shortage of blood donors, but Hokkaido has the highest donor rate in the nation. In a prefecture where the population density is low, this bus is what makes it possible to collect everyone's blood donation by traveling from one town to another. Some of the donors we meet are: a man who has donated blood 289 times, a woman who is donating blood as an act of gratitude and a nursery school teacher who feels refreshed by having blood drawn. We spend 3 days visiting small towns in Hokkaido, on a mission of compassion.