The last wedding guest

The guests are arriving and the celebrations are beginning. But there’s something strange about this wedding…
Frank Szatowski hasn't seen his daughter in three years, and it's been eating away at him every day. So, when Maggie calls him out of the blue, he is overjoyed. And when she tells him she's getting married and invites him to the wedding, his excitement knows no bounds.
As it later turns out, Maggie is marrying into the wealthy Gardner clan, the son of a famous American tech mogul. Frank is taken aback by the high social circles his daughter now moves in. However, he is determined to mend his relationship with her at any cost.
The wedding is held at a very luxurious and remote country estate by a lake. Frank tries to reconnect with his daughter and get to know her new family. But it's difficult. His future son-in-law, Aidan, is withdrawn and evasive, Maggie has no time for him, and the locals don't have a good word to say about the Gardners.
Frank begins to suspect that something isn't right. What’s more, before the wedding, he received an anonymous message linking Aidan to the long-ago disappearance of a young woman. He decides to find out the truth, even if it means losing Maggie forever.