The Lego Movie, when it hit the theaters in early 2014, was a relatively unexpected hit for both Warner Brothers and the Lego Company. Both children and their parents loved a computer-animated film that looked stop-motion, and the story of a child and parent along with the toys was enough to bring home a lot of box office profits. Naturally, a sequel was ordered, and this is what is known about The Lego Movie 2, also known as The Lego Movie Sequel, as well as what is happening with the new Cinematic Lego Universe.
According to Cinema Blend, The Lego Movie 2 will be called The Lego Movie Sequel, which is an interesting title direction to go with its tongue-and-cheek style. Unfortunately, the original directors, Phil Lord and Christopher Miller, will not be one as directors, but only producers. The new director is Rob Schrab, who has a long history of directing television comedy.
The original cast of Emmet (Chris Pratt), Wyldstyle (Elizabeth Banks), Will Arnett (Lego Batman), Nick Offerman (Metalbeard), Charlie Day (80's Spaceman Benny) are set to return. There are reports that Doctor Who will also appear as one of the characters, or at least make an appearance.
Beyond that, not much about The Lego Movie Sequel is known. The big question is what can be done with a sequel. After all, The Lego Movie mainly takes place within the imagination of Finn, a young boy who was played by Jason Sand. This boy is going to grow up within four years of the original 2014 movie, and perhaps he won't want to play with Lego anymore, unlike his father, played by Will Ferrell (who has not been confirmed on IMDB whether he will be in the sequel). The idea of a child growing up and having to decide to keep or discard his toys would make an interesting plot, and how it would affect the Lego world would also be just as interesting.
Of course, there was a tease of a sequel at the end of The Lego Movie that involved Finn's sister and some Duplo blocks. It didn't seem like that would be a big deal, and it doesn't look like enough story fodder to make a plotline for The Lego Movie Sequel.
The Lego Movie Sequel will not be the only Lego film coming out that is related to the toy bricks. Warner Brothers started a new film franchise as the modest $60 million film brought in $468 million, so they have greenlit more Lego films. Expect to see The Lego Batman Movie in February 2017, which will detail the Lego Caped Crusader, a side character in The Lego Movie, but is deservedly given his film. There will also be a Lego Ninjago film in September 2017, presumably with the same style of animation. The Lego Movie Sequel will be in theaters on May 18, 2018, which will be two weeks after the first Avengers: Infinity War film.