Movies that were completely different to what you were expecting?

Most times when we watch a movie, we go in having some idea of what it will be like.

I’d like to know - which movie surprised you because it was completely different to what you were expecting?

I’m not after ‘it was better/worse than I thought’, more style, genre, tone, vibe etc

I watched ‘Civil War’ expecting a pretty silly big action thriller, it was not that.