The Avengers
In short
A 2012 American superhero film produced by Marvel Studios that brings together several iconic Marvel Comics characters to fight a common threat.
In plain words
A group of superpowered heroes team up to save the world from an alien invasion. It is the sixth movie in the Marvel Cinematic Universe.
A simple example
Characters like Iron Man, Captain America, and Thor work together to stop Loki and his army from conquering Earth.
Why it matters
It was a massive success that proved large ensemble superhero films could work globally. It helped build the foundation for a massive connected cinematic universe.
Easy to mix up
Do not confuse this with the 1960s British spy television series of the same name.