Adam convinces Hawa that the two of them must change the course of history together. They will ensure that the virus never breaks out in her time, thus saving the world. Who was infected with the virus first? Hawa and Adam go together to look for patient zero.

Adam and Hawa want to prevent the virus from breaking out, and so Hawa has to become good friends with Kim. Only then can Hawa come along to Medico, and prevent Kim from being bitten by the ferret from cage 22C.