The first half of the movie is great, although confusing.
The second half is predictable and boring. It completely killed the movie. It's a bit like they tried to recreate Oldboy with little hints here and there to end up with the big reveal. But by that point, you're not invested anymore and everything feels cliché. Another case of a good concept at first, but that ends up falling flat in the end.

The actor are great however. The two main actos and the ones playing their parents (mostly the mother) do a really good job. However, as the movie get into the second part, because the story isn't that great anymore, the acting also suffers from it I feel like. I should be shocked, sad or something, but in the end, I was just annoyed mostly.