The storyline follows the adventures of Emmett Brickowski, an ordinary construction worker, voiced by Chris Pratt, who along with several other Lego characters, must save the world from an evil overlord.

A range of other merchandise and media was produced as part of the marketing programme, including The Lego Movie Video Game and a number of books published by Penguin and Scholastic.

[7] Matthew Ashton, The Lego Group's Vice President of Design commented, "I also coordinate toy development from our side.

[33] The 14 sets[34][35] were Getaway Glider, Melting Room, Bad Cop's Pursuit, Cloud Cuckoo Palace,[36] Ice Cream Machine, Trash Chomper, Castle Cavalry, MetalBeard's Duel,[37] Super Cycle Chase, Lord Business' Evil Lair,[38] MetalBeard's Sea Cow,[39][40][41][42] The Flying Flusher, Creative Ambush and Rescue Reinforcements.

In addition, three polybag sets were released as promotions[43] which were The Piece of Resistance,[44] Micro Manager Battle and Super Secret Police Enforcer.

Each of the sets featured seven core characters, named Emmet, Lucy, Batman, MetalBeard, Unikitty, Benny and Vitruvius.

[48] The three sets being released were Batman & Super Angry Kitty Attack,[49] Double-Decker Couch and Bad Cop Car Chase.

On 27 November 2018, it was announced that The Lego Movie 2 Videogame would be released on 26 February 2019 and included Star-Stuck Emmet minifigure as a free gift.

[79][80][81] The six sets being released were Shimmer & Shine Sparkle Spa!, Queen Watevra's 'So-Not-Evil' Space Palace, The Rexcelsior!,[82][83][84] Welcome to Apocalypseburg!

These set are twice the length, height, and width of traditional Lego bricks, making them easier to handle and less likely to be swallowed by younger children.

A range of The Lego Movie 2: The Second Part BrickHeadz was announced in 2019, which included Emmet, Wyldstyle, Benny and Sweet Mayhem as buildable characters.

Batman's A True Artist is a stop-motion animated short film included on the home media release of The Lego Movie.

[104] Michelangelo and Lincoln: History Cops is a stop-motion animated short film included on the home media release of The Lego Movie.

It is presented as a trailer to a fictional action blockbuster starring the master builders, Michaelangelo and Abraham Lincoln as they fight crime.

[106] The president of Hollywood sits down with Emmet and changes up the plot of The Lego Movie to prominently feature ninjas for marketing purposes.

On December 10, 2018, Warner Bros. released a Christmas-styled promotion for The Lego Movie 2: The Second Part, titled Emmet's Holiday Party.

[107][108] In the short, Emmet and the citizens of Apocalypseburg throw a big Christmas Party to make everything awesome again despite the concern of attack from the Systar System.

[114] The Lego Movie 2 Videogame is a Lego-themed action-adventure video game that based on the sequel film was announced on 27 November 2018.

A "Starter Pack" includes an additional level that recreates the events of the original film and adds Wyldstyle as a playable character.

[131] A short 4D film attraction titled The Lego Movie: 4D – A New Adventure was released on 29 January 2016 at Legoland Florida Resort.

[133] In 2019, In 2016, The Lego Movie 2: The Second Part magazine published by Media Lab Books was launched from January 2019 in US to accompany the toy line.