What is the main content of "The Visitor" starring Angelina Jolie? I read a little bit but didn’t see the beginning and the end, haha.

I went to the cinema to watch it yesterday, and I will tell you about it. It begins with the London Financial Crime Unit tracking a woman named Elise (played by Angelina Jolie). She knows that she is being followed, and goes to a While drinking coffee in a coffee shop, I received a letter from Alexander. It turned out that the Financial Crime Department wanted to arrest Alexander, so they wanted to follow her because she and Alexander were once lovers. This letter directed Elise to Venice, and told her to get on the train and chat with someone with a similar figure to Alexander so that others would think he was Alexander (Alexander stole 700 million from the Italian gang and had plastic surgery in Brazil, so there was no People know what he looks like now). So Elise got on the train and found a similar guy. His name was Frank, an American math teacher who also went to Venice for vacation. The two had a good chat all the way. After getting off the car, Elise felt a little fond of him and took Frank to the hotel they had booked. Through deliberate ambiguity, everyone thought Frank was Alexander, but the London Financial Crime Department searched the information and knew that Frank was a mathematics teacher. At this time, the gangsters appeared, determined to catch Alexander and get the stolen money back. One morning, Elise sneaked away and gangsters broke into the hotel. Frank ran away and climbed over many rooftops. He happened to be seen by Elise on the road. Unexpectedly, Frank pushed a policeman into the river while jumping from the roof and was imprisoned. Went to jail. In the middle of the night, the prison guard contacted the gang and sold Frank to the Black Rod as Alexander. At this time, Elise appeared and rescued Frank on a yacht. The relationship between the two is even more ambiguous. The next day, Elise sent Frank to the airport, gave him money and a passport, and asked him to return to the United States quickly. She didn't want innocent people to be implicated. But Frank didn't leave and attended the cocktail party in the evening. Elise received another letter from Alexander at the cocktail party, and when she was about to chase him, she was stopped by Frank and had a dance. Before the dance was over, Elise went to the new agreed place. Unexpectedly, the gang followed her and threatened Elise to tell them where the money was. Frank, who was temporarily detained by London's Financial Crime Department, cleverly escaped and went to rescue Elise, claiming that he was Alexander. The gangster asked him to open the safe. At the critical moment, the police shot and killed the gangster. Elise asked Frank why he did this. Unexpectedly, Frank opened the safe and it turned out that he was Alexander. Alexander returned the stolen money to the safe, and left happily with Elise...