I don't plan on writing on writing part 3 but you can do this or write you own prediction.
I don't think this prediction will be true but some things may be similar like Orochimaru may try to kidnap someone as he is meant to be the villain in the Boruto movie.
This prediction will take place after Bolt and Sarada finish the chunnin exam in the movie. I think the Naruto gaiden manga will show Sasuke training Bolt, Sarada and a new kid (3rd member on the ream). This manga will likely show most of the other characters as well with the focus being on Bolt and Naruto?
Boruto movie prediction part 1 (wall of text no jutsu)
Early in the movie some ninja will try and fail to kidnap Sarada, Bolt will help her beat these ninja. Later Sasuke will lead Bolt, Sarada and a new kid on a mission outside of Konoha to make the team stronger.
Naruto will tell Sasuke to be careful as the ninja who tried to kidnap Sarada could have been sent by Orochimaru.
Outside the village Orochimaru will try and fail to kidnap Sarada since he thinks he can make Sarada awaken rinnegan in the future if implants Hashirama cells into her.
Orochimaru doesn't realize that rinnegan = Indra chakra + Ashura chakra + near death experience + (EMS eyes?)
Orochimaru's Zetsu body will allow him to master dragon sage mode which will let him close his eyes so he doesn't get affected by Sasuke's visual genjutsu.
Orochimaru will realize he doesn't have the power to fight Sasuke so he will use Edo Tensei to bring back some strong ninja to distract Sasuke while he try's kidnap Sarada. He will also have a curse seal army that Boruto and Sarada will fight.
Suigetsu and Karin are following Orochimaru's orders while Jugo decides not to obey Orochimaru as Sasuke represents Kimimaro's will and Jugo doesn't want to do bad things.
Jugo will be imprisoned and his ability will be used to create enhanced curse seals to power up Orochimaru 's army. Karin will have a grudge against Sasuke for choosing Sakura over her and Suigestu will recruit ninja to be in his 7 swordsman.
Part 2, the battle
Bolt, Sarada and the new kid are fighting the curse seal army while Sasuke is busy fighting Edo Tensei Madara and Edo tenseigan Hamaru. Edo Madara isn't a jinchuuriki since he died without the ten tails but he still has both rinnegan eyes and Sage mode.
Orochimaru has made it so Edo Madara / Edo Hamura have enhanced hashirama cells and a enhanced curse seal. The curse seal allows Orochimaru to properly keep Madara / Hamura under control but he allows Madara some level of control / freedom to fight Sasuke.
A flashback shows Orochimaru got Hamura's dna by visiting his mummified corpse on the moon and he already found Madara's body, the flashback ends.
Sasuke is struggling to fight Madara and Hamaru at the same time but Naruto appears and tells Sasuke to fight Madara while he fights Hamura.
Madara and Hamura talk about the past and give use some info on the Uchiha / Hyuga clan. Sasuke rips Madara's soul out with preta path while Naruto seals Hamura with a new magnet rasengan jutsu.
Orochimaru watches Bolt's team fighting the curse seal army and says he's impressed. He runs up to Sarada and opens his snake mouth to kidnap her but Sasuke see's this and uses hhp to swap himself with Sarada and kicks Orochimaru in the head.
Orochimaru flies in the air regains his balance and swallows the new kid on Sasuke team then he teleports to his hideout. Sasuke and Naruto then split up to find out were Orochimaru has gone.
End of part 2.
I don't think this prediction will be true but some things may be similar like Orochimaru may try to kidnap someone as he is meant to be the villain in the Boruto movie.
This prediction will take place after Bolt and Sarada finish the chunnin exam in the movie. I think the Naruto gaiden manga will show Sasuke training Bolt, Sarada and a new kid (3rd member on the ream). This manga will likely show most of the other characters as well with the focus being on Bolt and Naruto?
Boruto movie prediction part 1 (wall of text no jutsu)
Early in the movie some ninja will try and fail to kidnap Sarada, Bolt will help her beat these ninja. Later Sasuke will lead Bolt, Sarada and a new kid on a mission outside of Konoha to make the team stronger.
Naruto will tell Sasuke to be careful as the ninja who tried to kidnap Sarada could have been sent by Orochimaru.
Outside the village Orochimaru will try and fail to kidnap Sarada since he thinks he can make Sarada awaken rinnegan in the future if implants Hashirama cells into her.
Orochimaru doesn't realize that rinnegan = Indra chakra + Ashura chakra + near death experience + (EMS eyes?)
Orochimaru's Zetsu body will allow him to master dragon sage mode which will let him close his eyes so he doesn't get affected by Sasuke's visual genjutsu.
Orochimaru will realize he doesn't have the power to fight Sasuke so he will use Edo Tensei to bring back some strong ninja to distract Sasuke while he try's kidnap Sarada. He will also have a curse seal army that Boruto and Sarada will fight.
Suigetsu and Karin are following Orochimaru's orders while Jugo decides not to obey Orochimaru as Sasuke represents Kimimaro's will and Jugo doesn't want to do bad things.
Jugo will be imprisoned and his ability will be used to create enhanced curse seals to power up Orochimaru 's army. Karin will have a grudge against Sasuke for choosing Sakura over her and Suigestu will recruit ninja to be in his 7 swordsman.
Part 2, the battle
Bolt, Sarada and the new kid are fighting the curse seal army while Sasuke is busy fighting Edo Tensei Madara and Edo tenseigan Hamaru. Edo Madara isn't a jinchuuriki since he died without the ten tails but he still has both rinnegan eyes and Sage mode.
Orochimaru has made it so Edo Madara / Edo Hamura have enhanced hashirama cells and a enhanced curse seal. The curse seal allows Orochimaru to properly keep Madara / Hamura under control but he allows Madara some level of control / freedom to fight Sasuke.
A flashback shows Orochimaru got Hamura's dna by visiting his mummified corpse on the moon and he already found Madara's body, the flashback ends.
Sasuke is struggling to fight Madara and Hamaru at the same time but Naruto appears and tells Sasuke to fight Madara while he fights Hamura.
Madara and Hamura talk about the past and give use some info on the Uchiha / Hyuga clan. Sasuke rips Madara's soul out with preta path while Naruto seals Hamura with a new magnet rasengan jutsu.
Orochimaru watches Bolt's team fighting the curse seal army and says he's impressed. He runs up to Sarada and opens his snake mouth to kidnap her but Sasuke see's this and uses hhp to swap himself with Sarada and kicks Orochimaru in the head.
Orochimaru flies in the air regains his balance and swallows the new kid on Sasuke team then he teleports to his hideout. Sasuke and Naruto then split up to find out were Orochimaru has gone.
End of part 2.