One humid evening in Monterrey, El Vago was spotted near a derelict housing block. For hours, he stood across from a vibrant blue door that looked out of place against the gray concrete. Passersby ignored it, but El Vago waited for the light to hit the peeling paint at just the right angle of decay.

A message had pinged his encrypted terminal an hour ago. No return address. Just a set of GPS coordinates and a single line of text: They are cleaning the river. Film it.

: Viewers often feel like they are walking alongside the host, creating an immersive experience of the city's sights and sounds.