How many movies have Robert Plant and Stephen Stormer collaborated on?

They have worked on 1 movie together! Their first movie together was Robert Plant and the Sensational Space Shifters: Live at David Lynch's Festival of Disruption - 2016 (2018) and was their highest rated movie together. They have not worked together since Robert Plant and the Sensational Space Shifters: Live at David Lynch's Festival of Disruption - 2016 (2018).