10 More Horror Movies That Lied About Their Premise
2. Titane Had A LOT More Going On Than Anyone Expected

Having won the prestigious Palme D'Or at the 2021 Cannes Film Festival, body horror Titane's official synopsis reads:
"Following a series of unexplained crimes, a father is reunited with the son who has been missing for 10 years."
While that synopsis is largely correct, Titane is that and a whole lot more.
That father is Vincent, but way before we get to the meat of this Julia Ducournau offering, we're introduced to Alexia, a young girl who has a titanium plate fitted into her head after a car crash incident.
Skipping ahead to Alexia as a young adult, she detests her parents, works as a model/dancer, kills some creep... and then has sex with a car. Before you know it, we learn that Alexia is a serial killer, is somehow pregnant from this car 'incident', and she burns her parents alive before taking on the false identity of Adrien.
Who's Adrien? Why that's the son of Vincent who's been missing for years. Adapting her appearance accordingly, Alexia convinces - well, kind of convinces - Vincent that she's actually Adrien, and thus he takes her in and promises to look after 'Adrien'.
Seriously, all of this is just the tip of the iceberg for Titane, but safe to say, this very much is not the film you thought it was going to be. That said, it is a thoroughly excellent film with a lot more complexity than the attention-grabbing notion of 'person has sex with car'.