Three-Act Structure of film
A beginning,Middle and an end.
Act I :
In this act,we have to introduce the main character and his/her goal.The premise,the plot and the character layer.
Premise:
The premise of a film or screenplay is the fundamental concept that drives the plot.
Example: (October sky-1999)
Here in this movie young boy is whether he wants to be a coal miner like his father or something different like a scientist.
Catalytic event:
Occures ten minutes into the first act.
Example:(october sky)
Here in this movie,the catalytic event is the main character decision (young boy) is to build a rocket.
Plot:
Plot,which exhibits the twists. It is a common practice in narration used to keep the interest of an audience, usually surprising them with a revelation.
ACT II :
Dramatic tension of the screen story and raise the ante for main character in his/her struggle to achieve his/her goal.
(i.e.,) Mid point,Turning point...
ACT III :
Out of resolution,the act where we find out if the main character achieves his/her goal.
Brief example for THREE-ACT STRUCTURE:
(Film-October sky '99)
Here in this film main character HOMER,is faced with two choices : a life like his father,as a coal miner OR something different.His goal is to build a rocket to win a science fair on the nation level in order to create the bridge to a new life as an adult.
In ACT III,he has to win the science fair as well as permission from his father to have another life.At the Turning point,(ACT II) homer has to work in the coal mine to earn money(his father has been injured).He has become his father,but he does win the local science fair.ACT III is about getting permission from his father to be a different from his father.This character layer is further complicated by the hospitalization with cancer of his mentor,his high school teacher.
He decides in ACT III that he doesn't want a life in the mines and that he can compete at the national level, supported by fund raising in the town and the support of other coal miners aside from his father,he goes to the national competition.There some of his equipment is stolen and only through the help of towns people,now including his father,is the needed equipment replaced.In the PLOT layer he wins the national science competition.Back at home he will launch a rocket show the town people likes his achievements and his gratitude.This time his father does attend to share and in his own way,support his son.This public acknowledgement by the father of the main character resolves the character layer.The son has his father's permission to be different from his father,and the son credits the father.Both are equally willful.
Epilogue:
The epilogue may be followed by an after ending,a new and surprising twist to the story(this may happens especially with thriller films).