Knowing

John Koestler (Nicolas Cage) is both a father to Caleb (Chandler Canterbury) and a physics professor. Strange events begin to unfold when a time capsule at his son's elementary school is opened, and a letter makes it's way into his hands. John has been in a deep depression and has come to believe there is no purpose to life since the accidental death of his wife a few years earlier. He becomes obsessed with finding the meaning behind the letter in the time capsule. In his quest to uncover the secrets of the letter, he meets Diana Wayland (Rose Byrne) and her daughter, Abby Wayland (Lara Robinson), who are the direct descendents of the little girl who wrote the original letter that was placed in the time capsule 50 years earlier. Abby and Caleb seems to be plagued with hearing voices and visits from mysterious strangers. It becomes apparent that there is more to the meet up of all these characters than any of them could have expected as they all go on a journey together that takes them to their ultimate purpose and destiny.