The heroine of the film's Dramatic "Proof", the 27-year-old Katherine, threw the University and several years to care for his father — a brilliant Professor of mathematics, whose disease has progressed and did his helpless man. Every year the father increasingly lost touch with the real world and immersed in a Fantasy world. On the eve of his birthday Katherine loses her father. It cannot survive this tragedy, even older sister Claire is not fully able to understand the pain that feels Katherine, though has struggled to support her. Having inherited from his father a gift, Katherine is afraid that the same inherited his illness.
It still so much to learn and this helps her former student's father, HAL, a young guy who is trying to find the diaries of Robert Ljuvellina proof of his brilliant mind and genius. Grief brings Catherine and Hala, which has long been secretly in love with her. Together they face many trials that befell Katherine, as well as find in notebooks insane old man records that may become a scientific breakthrough.