Lily Wilson proposed to her long-time boyfriend Michael Smith. However, Michael experienced an occupational exposure during the treatment. He did not to want to be a burden for Lily. So he asked Lucy Parvis to act and pretend to be intimate with her. Lily was hurt by Michael time and time again, gradually feeling sad. Michael also felt upset but he never had the courage to tell Lily the truth. In the end, Lily left and went abroad. On the other hand, Michael learned that he was not infected and realized the harm he had caused Lily, wanting to retrieve her.