Build a movie plot around this: How old is Briony? multiple ages through the plot
Answer:
In England in 1935, precocious 13-year-old Briony Tallis (Saoirse Ronan) lives on her family's country estate with her mother and sister, Cecilia (Keira Knightley). Cecilia is home for the summer from Cambrige where she has been studying with the housekeeper's son, Robbie (James McAvoy). She and Robbie have an uncertain relationship; neither is willing to act on it but a certain romantic chemistry exists between them. One day, Briony sees from her bedroom window an argument between Cecilia and Robbie at the fountain. Robbie accidentally broke an antique vase and a piece of it fell into the fountain. Angrily, Cecilia stripped to her underwear and dived into the fountain to retrieve it. Briony is confused about the sexual tension between the two of them.The Tallises are being visited by young relatives from the north -- the twins Pierrot and Jackson (Felix and Charlie von Simson) and their 15-year-old sister, Lola (Juno Temple), whose parents are in the process of divorcing. Leon Tallis (Patrick Kennedy) brings his friend Paul (Benedict Cumberbatch) for dinner. Paul keenly follows Hitler's political advance and predicts war. He plans to sell chocolate bars to the British military to give to its soldiers. While he tries to amuse Pierrot and Jackson, Paul and Lola flirt.Embarrassed by his behavior earlier in the day, Robbie tries to write an apology note to Cecilia. One of the drafts includes a sexually charged declaration of his love for her. He then writes a more formal apology he intends to deliver to her. However, he accidentally gives the sexual note to Briony while walking to dinner at the Tallises that night; he gives her the note because he believes it will be less embarrassing if it comes from Briony instead of him. When he realizes what he has done, he calls out to Briony but she is too far away to hear him. Back in the house, she reads the note and is scandalized. She gives the note to Cecilia but later confides to Lola that she believes Robbie is a dangerous sex maniac. Lola has come to her with arm...