Birth is an American Drama film starring Nicole Kidman. Sean and Anna are married and at the beginning of the movie Sean is giving a lecture stating that he does not believe in reincarnation. One day while jogging into the park Sean dies. Ten years have passed an Anna has accepted a marriage proposal from her boyfriend Joseph. Clifford Sean's brother and his wife Clara arrive at Anna's party. Clara has to escape to go and buy Anna a gift. There is a boy that is secretly watching Clara. This boy is Sean. They all gather for a party for Anna's mother and the boy warns Anna not to marry Joseph. Anna does not pay any attention to the boy's pleas until she receives a letter from the boy stating he is Sean.
Joseph confronts the boy who is also named Sean. He takes the boy to his father but the Sean does not repeat his story. Sean is ordered to leave Anna alone but he refuses. Instead he leaves message on her answering machine stating to meet him in the park at she would know where. However Bob Anna's brother-in-law who is a doctor submits Sean for questioning. Sean recants all of his life with Anna even the smallest details. Sean's mother brings him to Anna's apartment. Again Sean can recant all the details in the apartment. Anna believes that this is her deceased husband Sean, but the others are skeptical still especially Laura who is Anna sister.
Joseph is in rage with jealous and attacks the boy. Ann runs behind him and kisses him. Then there is a twist Clara and Clifford meets Sean who gives a backpack full of love letters. The truth be told Clara and Sean were lovers and she was in rage that he would not leave Anna. Clara states if Sean was a real he would had come to her. Anna wants to marry Sean when he becomes of legal age, but Sean apologizes stating he cannot be her deceased husband because he loves her.
Anna and Joseph are married in a beach ceremony and Ann wanders into the ocean only to have Joseph pull her back to the shore whispering in her ear.