The Fandom Post is reporting that YouTube Movies has added the Accel World: Infinite Burst anime film in its English dubbed form for free streaming.
The story of the film is described as:
A mysterious black cloud kicks Haruyuki and his friends out of the online fighting game Brain Burst. Unable to reenter, they discover that this isn’t just an isolated incident— the cloud is spreading and preventing all Burst Linkers from accelerating. Haruyuki and the others soon learn that, to protect the bond that connects them, they must confront a powerful ancient being that has been sealed away since the dawn of the Accelerated World.
Source: The Fandom Post