A few very mild exclamations such as 'darn,' 'heck,' and 'butt.' The word 'stupid' is used a handful of times. No profanity beyond this level. One character says 'Oh my gosh.' No uses of God's name in vain.
Extensive but entirely cartoonish Lego-on-Lego action violence. Characters are smashed, broken apart, and rebuilt (they are plastic toys). Laser guns are fired, vehicles crash, and Lego structures explode frequently. A 'super weapon' (Kragle/Krazy Glue) is used to freeze Lego figures permanently, which is treated as a dire threat. One character is 'decapitated' (a Lego head popped off) played for laughs and quickly resolved. The villain Lord Business threatens mass destruction. None of this is graphic or bloody — it is all within the context of plastic toys.
Strong themes of self-sacrifice, humility, believing in others, teamwork, and the value of every individual regardless of their perceived ordinariness. Emmet is willing to sacrifice himself to save his friends. The film's emotional climax involves a father-son reconciliation: the father (Will Ferrell) learns to stop rigidly controlling his Lego creations and instead connects with his son through play, listening, and shared creativity. This is a genuinely moving affirmation of the parent-child relationship and the importance of fathers engaging with their children. The film also teaches that being 'special' isn't about having unique powers but about kindness, courage, and caring for others. Conformity and blind obedience to a tyrant are shown as negative, while individual creativity used for the good of others is celebrated.
An ordinary Lego mini-figure, mistakenly thought to be the extraordinary MasterBuilder, is recruited to join a quest to stop an evil Lego tyrant from conquering the universe.