In her newly promoted role as supervisor of the unit, Vivian heads up the investigation into the case of a blind girl and her mobility mentor, who were abducted during an overnight camping trip. Meanwhile, Jack struggles with his looming divorce from Maria, and must say goodbye to his family who will be moving to Chicago without him.

While Jack must start to deal with his messy divorce from Maria, and the impact his affair with Samantha will have on his custody battle, the team begins to search for a missing x-ray technician who has long believed he was abducted by aliens as a child and has feared their return all his life.