Movie spoiler so far from JOP
>Main plot is Nana going schizo over Setsuna existence ceasing after she graduates - since school idols can only be one if they are on school - but AI goes daijobu on the dilemma ("stop being a dramaqueen nana")
>AI ikemen arc starts
>No one slut it out like Shizuku on part 1
>Karin was pretty much sidelined
>A.L.A.N is a drone, and got more screentime than Karin
>Part 3 will take place on Tokyo