The young doctor-oncologist receives an offer which impossible to refuse - an invitation to a Medical conference in Geneva, where soon will happens competition between the most genius doctors from around the world. But for a victory in this competition the doctor needs the biggest tumor ever seen. For the sake of victory, she is ready for everything, including killing his own patients, for whose life she recently fought. However, death of patience is ultimately not enough to head the victory and the doctor faces a choice that is not so easy to decide. Tumors 3: Doctor Nightmare - not a direct continuation of the previous two parts shot by Alex Wesley, but a new interpretation of the monstrous story with new experiences, horrors, and of course with new victims.