Watch full movie online. Adapted from a popular Chinese Crime Fiction Campus novel. After receiving a heart transplant, Xia, who is a mathematical genius and studies in Nanyang University, is wrapped in the mist of a murder. With the help from University colleague Qin, she gradually realises that this is an insane scheme of organ trafficking manipulated by subtle mathematical calculations. What is more, a terrifying secret is also hidden inside Xia’s new heart.