This compelling documentary captures Calle 13 -- the Puerto Rican hip-hop and reggaeton act consisting of half-brothers Residente and Visitante -- as they set off in 2006 to learn about the people and cultures their music has touched. Interspersing footage of the duo's travels through the high plains of Bolivia and Peru with images from the group's phenomenally successful past year, the video reveals a spiritual as well as a physical odyssey.