As Mario realized that he was getting older, he decides to return to his homeland to continue the scientific research work. But those days of peace did not last too long when a strange pathogen began to grow and left people feel unwell. After a process of testing and investigating, the cause was found, which is the malicious virus. They enter the body through the gastrointestinal tract and are immune to many antibiotics. Dr. Mario, from dawn till dusk, studied for a special medicine to save people. This brought him into a new battle with his mind and acumen.
