RT Docs' The World's Greatest Head Massage: An ASMR Journey is a two-part documentary that investigates the world of autonomous sensory meridian response (ASMR) and the ASMR "artists" who make content online. It follows Rooster Teeth’s Burnie Burns and Gavin Free, who talk about their experiences with ASMR, and then fly to India to search for Baba, the "Cosmic Barber of Pushkar," whose famous "World's Greatest Head Massage" videos gave them both tingling ASMR sensations.