Watch any movie, locate plot points at the end of Act I and Act II.
What incident/event occurs in the 1st 15-30 minutes?
Movie: Skyfall, Sam Mendes
Daniel Craig, Judi Dench, Javier Bardem, Naomie Harris, Ralph Fiennes.
In the first 10 minutes of the film, James Bond's mission to stop a man (who has the hard drive containing the names of the all the Secret Agents) goes completely wrong, James Bond accidentally gets shot by a colleague; he is believed to be dead by everyone for 3 months. This could be seen as Plot Point I, but another event happens in the first 20 minutes which could also be described as plot point I, that is the terrorist attack on MI6's office. A bomb destroys M's office and kills 6 people, attracting the attention of Bond who is at that point living his life as a dead man abroad. He returns to London to help.
At the end of Act II, Silva is captured by Bond and taken into custody back at the headquarters.
What incident happens that leads us to Act III?
The incident that leads us into Act III is Silva's escape from MI6 and the attack/shootout on the courtroom: Silva attempts to kill M and fails, M escapes. This event moves the story into Act III, which is Bond and M going back to Scotland to Bond's childhood home, where they will have the final fight with Silva.