Out of desperation, Zhang Yi is pushed to participating in the deceitful doctor Bai Li's heart transplant plan. His body and mind are ruthlessly devastated. Inadvertently, both men get caught in the crosshairs of the secrets within Rebirth X Medical Research Center. In order to survive, Zhang Yi teams up with Bai Li to expose the dark secrets of the organization. However, a bigger crisis is waiting for them. This time, their fates are tightly intertwined. What they are about to face is a test of humanity... Where will they end up?
