Antonio Tenorio is a B1: he's totally blind and carries on his judo kimono the red circle which symbolizes it. The documentary follows this professional judo player as he prepares to compete for a fourth Paralympic gold medal, in Beijing. Filmed in Brazil, France and China, 'B1' is an international journey through the perspective of a blind judoka, one of the few in the world to compete both in Paralympic and regular championships, discovering the man behind the high-performance athlete and investigating cinematographically his sensibility.