The LEGO Movie
Emmet Joseph Brickowski has been working most of his life on the construction site as an instruction worker in the city of Bricksburg. He longs to be popular, but his co-workers hardly notice he's there. He lives life by the book--literally--and builds things only from the instructions. Because of this, however, he is mostly boring and uncreative, except for at some moment of inspiration, like his inventing the "double decker couch". He is not a fan of adventure or danger either (similar to Bilbo Baggins), both of which give him reason for "freaking out".
One day, however, he stumbles upon the Piece of Resistance while going after Wyldstyle, which makes the Master Builders mistake him as being "The Special", which means he must stop Lord Business from gluing the world together with the Kragle. From that point on, he is caught in a desperate struggle between the powers of order and imagination by Lord Business and the Master Builders, respectively--as well as his self-acceptance in being special in his own ways.
In the final battle, Emmet convinces Lord Business that creativity is not messy or weird, and that it is okay for the people to build brand-new ideas from all the things Business himself had made, which makes him special, too, just like everyone is special. Moved by Emmet's speech and touched by being considered special, Business applies the Piece of Resistance on the Kragle, which soon causes the Kragle to explode, deactivating all of his robot minions and unfreezing his victims (though the real "victims" were saved when the Man Upstairs cleaned the glue off them).
After the battle, it is revealed by The LEGO Movie: The Essential Guide that Emmet now spends time with his newfound friends, along with Gail, Wally, Frank, Sherry, Surfer Dave, and all of his Bricksburg friends. This may mean that his Bricksburg friends had finally started to notice he is around.
The LEGO Movie 2: The Second Part
Once the DUPLO Aliens come up, his friends were ready to battle again, but Emmet stops this and decides to talk to the aliens. He first manages to be friendly with them by building a heart to them as a gift. However, the Aliens eat the heart and they ask for more. Lucy quickly makes a big hammer and punches them, but makes the aliens scream out loud and starting attack Bricksburg once for all.
5 years after the DUPLO attack, Emmet is the only one who's not affected by the change and pretends that everything is still awesome, despite his girlfriend's Lucy's advice. Emmet tells Lucy he has some dreams about "Our-Mom-Ageddon", which involves some of the characters later presented in the film and the all LEGO World being sucked by a giant hole. Although, Emmet wants to rebuild the future by making a house for both of them. After a tour in a new house build by Emmet, Lucy is worried that the house might be destroyed and the fact that Emmet still believes everything is awesome. She asks him to grow up so he can adapt to these modern times. Emmet promises he will try.
When Emmet sees a shooting star, is actually revealed to be a spaceship from another planet, and Wyldstyle seeing this with giant glasses, questions why it's here. The alien is revealed with the name of Sweet Mayhem and takes her and his friends (Batman, MetalBeard, Unikitty and Benny) into her ship. Thinking he's not tough enough like the others and could not save his friends, Emmet decides to save them. He makes his dream house to a spaceship to give pursuit. En route, he is saved from colliding with an asteroid field by the rugged adventurer named Rex Dangervest. As they continue on to the Systar system, Emmet begins to take on several of Rex's mannerisms, hoping to impress Lucy. When they arrive, they evade capture by Wa'Nabi's forces by swamp creatures and "brainwashed" of most of the people by listening and singing to the Catchy Song.
Once they escape for the Duplo Brickyard, he is reunited with Lucy and they embrace, but no so much when she meets Rex Dangervest. Rex tells Emmet has managed to have his own abilities and force by making him tough. Despite Emmet's joy of this by impressing her, Lucy is sort of disappointed by this. They make up a plan which involves switching off the pop music that is brainwashing the others, while Emmet will destroy the reception cake encased in a temple to stop the wedding between Batman and Wa'nabi. However, Rex and Emmet are shocked when Lucy reveals her original hair to them, and she affirms she is not brainwashed. Despite Rex warnings, Emmet believes is the real Lucy because he trusts her, and she helps them to the plan.
While following the plan and before to do so, Rex gives him his own vest, and Emmet thanks him for helping him, without knowing Rex's true intentions. Lucy tries to prevent Emmet from destroying the temple after learning the true intentions of the DUPLO Aliens, but Emmet, facilitated by Rex's manipulations, destroys the temple anyway, believing that Lucy was brainwashed and the fact that the real Lucy would never like Everything is Awesome, leaving her heartbroken. This creates a hole in the LEGO universe, and Wa'Nabi warns them that everything Our-Mom-Ageddon has on all of them.
Emmet is left confused for not saving his friends, and he realizes the DUPLO Aliens were only trying to be peaceful with his friends. As he tries to stop them, Rex prevents him, who reveals he is an embittered version of himself from the future. After being neglected for years underneath the dryer after crashing in the asteroid field, he time-travelled back with the intention to deliberately bring upon the Our-Mom-Ageddon as revenge for not being saved by his friends. When Emmet tries to leave, Rex sends him under the clothes dryer in the real world to ensure that he will exist.
When the two fights, Rex knocks Emmet by almost breaking him in a half. However, determined to not become like Rex, Emmet is returned into the LEGO world when Lucy arrives in front of him and gets reunited with Emmet, as she manages to trick Rex into punching a cute sentient heart, triggering an explosion, destroying his time machine and Rex topples in defeat. Lucy then tells Rex that Emmet will not become like him but he can be like Emmet as they ask him to join them, but Rex denies since he realizes that Emmet being saved by Lucy means he didn't end up becoming him, erasing his timeline and causing the deluded time-traveler to begin disappearing limb by limb. Emmet wants Rex to take his hand, but Rex accepts his fate and tells Emmet to always be upbeat and he will grow up to be better than him. After that, Emmet and Lucy reconciled each other for what they have done, declaring to each other being Special Best Friends forever.
Wa'Nabi and Batman finally wed, represented by Finn and Bianca reconciling with each other and agreeing to play together again. Their mother returns their toys, averting Our-Mom-Ageddon. The LEGO universe is transformed into a mishmash of Apocalypseburg and the Systar System called "Systocalypstar" which is peaceful. Emmet rebuilds his home with Lucy, who reveals she was one of the original artists of "Everything is Awesome" as Emmet gasps in response.
He was in Cloud Cuckoo Land for a break dancing competition with Wyldstyle, Unikitty, and MetalBeard. After Wyldstyle was declared the winner and Unikitty complaining aside, they witnessed MetalBeard being sucked into the vortex with his treasure chest, and saw Gandalf and Batman falling on top of LEGO Movie Batman, as well as the slap fight between the two Batmen then he and Unikitty actually agreed to join the trio to find their missing friends, but before they can join up, the vortex sucked the three main heroes up.
At the beginning of the Interdimensional War, Emmet accidentally travelled to another reality where he meets himself in Cloud Cuckoo Land. LEGO Movie Batman sees the two Emmets and falsely claims that the Emmet who came out of nowhere is his brother. Unikitty looks at them and says that they are identical twins. The two Emmets looked at each other and say "This is awesome!". The Emmet from another reality warns the Emmet of the LEGO Dimensions reality that a war had begun and offers him, Batman and Unikitty to help the heroes defeat Grand Emperor Enoch, leaving them to think about their decision.