For nearly half a century, the work of Placido Yambao has intrigued Filipino Martial Arts (FMA) aficionados all over the world. Yambao's manuscript, "Mga Karunungan sa Larong Arnis", was the first widely released documentation of a popular, and at the same time, esoteric art. Written in archaic Tagalog, Placido Yambao's book remained an obscure resource understood nad appreciated by only a select few. Now, with over 500 photos and exclusive supplementary materials, the enigma surrounding Yambao's art is unraveled as FMA master Rey Galang unveils the secrets of Placido Yambao's legacy.