Also I TRIED to keep this as spoiler free as possible, as in no major plot details, but I still vaguely describe scenes of the movie so keep that in mind before reading!
The first thing I want to mention is that yes, there are live action scenes at the beginning and end BUT they do not interfere with the story. My problem with the Lego Movie is that everything ends up being controlled by the humans and that kinda distresses me out and lose connection to the characters feeling real ;; Lego Ninjago Movie did not have this problem, so that's a big plus for me!
The next thing is that, like many movies, some scenes from the trailers weren't in the movie at all and a lot of others were altered. But that's fine.
Ok, onto the main points of the review!
This movie mainly excels in fight cinematography, the soundtrack, and the emotion. Expect a good amount of fast-paced action, but also some of the most tender, tear-jerking emotion ever. This movie has more feels than the Lego Movie and Lego Batman Movie in my opinion, even though it’s less concerned with humor (it’s still super funny but places action and emotion as priorities). The family and relationship related feels are mega powerful, somehow provoking more emotion than the tragic-toned sad parts of the previous two lego movies.
There aren't really many high school scenes (in fact, I think we already saw all of them in the clips and trailers) but we do go through a few cool and unique settings! Another thing to point out is that this is a Lloyd-centric story, focusing on the relationship between Lloyd and his dad. The other ninjas don't get much development, but the movie still does its job of making the characters appealing enough to draw attention to the main Ninjago franchise. So, even though none of the ninjas besides Lloyd get a chance to shine in the movie, I think that was intentional so people can check out the series to learn more about the other characters.
From this movie you can tell that Lloyd really cares about his team. I won't go too much into detail because this is intended to be a spoiler free review but there is more than one scene where Lloyd sees his teammates in danger and you can see the DEVASTATION in his eyes. I know I already said this but this movie does even better at tugging at your heartstrings than the other Lego movies in my opinion.
There are feel-good scenes of the team working together and Lloyd encouraging them, which I think would really delight Ninjago fans. Most of the interactions in this movie are between Lloyd and Garmadon, and though they’re super touching and important to the film, I think the blooper reel and Behind the Bricks have more satisfying interactions among the team itself.
The movie has great themes of forgiveness and appreciation for people in your life. I think it does its job of pleasing already-existing Ninjago fans, intriguing newcomers, and conveying it's family-built messages. The movie really makes you feel. It really makes you care about the characters. It has its share humor, action, adventure, and emotion.
So to sum it up, if you like awesome action and family feels, this is the movie for you! As a Ninjago fan I can honestly say I absolutely LOVED it, ranking above the Lego Batman Movie now. I think I can see why a non-Ninjago fan would prefer the Lego Batman Movie due to it being more hilarious and having a more detailed plot, but Ninjago fans? You're in for a real treat that will surely leave you feeling good in the end... especially if you like Lloyd! It has similar tones to the show I think; being about action, featuring a lot of feels, but still having the humor of a comedy.