“Leaf of Faith" is a documentary film that explores the controversy, background, and effects of Kratom, an herbal supplement derived from the leaves of the Mitragyna speciosa tree native to Southeast Asia. Kratom has been used for centuries in its native regions for medicinal and recreational purposes. The film delves into its growing popularity in Western countries, particularly in the United States, where it has been a subject of debate among lawmakers, the medical community, and advocates for natural health remedies.