If you didn't knew I am a huge sao fan and I had huge expectations for this movie and I'm proudly to say they succeed. The movie takes place after the end of season 2 and the beginning of season 3. It's about a new device called augma, The Augma is a next-generation wearable multi-device developed by Professor Shigemura Tetsuhiro and distributed by an emerging information and communication technology (ICT) company named Kamura, most people use it for sports but there has been a game that has been released called ordinal scale ,But there is only one problem I have with this it's basically season 1 of sao but put into a 2 hour long movie but besides that the movie overall is masturpiece in its own right, if you didn't knew already the movie is number eight in the japanese box office reaching 33.2 million us dollars or just over 4 billion yen
( 2017) The art work is astonishing even the lighting is marvellous, it's some of the best I have ever seen just coming underneath attack of titan and I have reviewed this in English dub 5.1 at 1080p × 1920p you can watch this at crunchyroll and netflix but do be warned there is no dub on netflix
But you can buy the English dub version on Amazon or just wait for the English dub to be released on netflix But it's your choice
Tom.crew