Watch the official 'Avengers vs. Thanos & Black Order' scene compilation for Avengers: Infinity War, a marvel superhero movie starring Robert Downey Jr., Chris Evans and Chris Hemsworth. Available on Blu-Ray August 14, 2018. As the Avengers and their allies have continued to protect the world from theaters to large for any one hero to handle, a new danger has emerged from the cosmic shadows: Thanos. A despot of intergalactic infamy, his goal is to collect all six Infinity Stones, artifacts of unimaginable power, and use them to inflict his twisted will on all of reality. Everything the Avengers have fought for has led up to this moment - the fate of Earth and existence itself has never been more uncertain. © The Walt Disney Company