The real story and mystery reveals itself as a parable about good vs. evil, treating your guests hospitably, and the current state of our nation.
Family Matters — The LEGO Batman Movie Review
On a technical level, the film's animation is stellar. The pacing is swift, the action is thick, and the lines are incredibly funny. I read a headline the other day that LEGO Batman has the best plot of any Batman movie ever, and I'm inclined to agree.