A new original story unlike the past movie that was a compilation of the series.
During the event “Walkure Senjou no Premium Live Event at Toyosu Pit” held in Tokyo, it was revealed that a new movie based on the Delta chapter of the Macross saga is in the works; the movie will be a new story, unlike the past one which was a compilation of the anime with some new scenes in order to make it a more logical story.
My Anime list describes the story of the anime as follows:
“Eight years after the events of Macross F, a mysterious phenomenon known as the Var Syndrome is gradually consuming the galaxy. It’s up to a new generation of highly capable Valkyrie pilots to deal with this universal menace. And if they didn’t have enough on their plate already, the Aerial Knights Valkyrie fighter team from the Kingdom of Wind have come to challenge the Delta Squadron.”
Via: Crunchyroll Latín América (Spanish)