In the parallel universe, Olivia works her first case at Fringe Division. Their target is Milo (Michael Eklund), a man who suffered from low-functioning autism, but since underwent treatment with nootropicdrugs, after which he has an incredible ability to calculate cause and effect to set off chain reactions, resulting in a number of deaths that are supposedly statistically impossible. Milo next plans to kill Olivia in an accident. His attempt fails because an unknown variable was present—Olivia is from a parallel universe—and is arrested. Throughout the episode, Olivia experiences hallucinations of Peter, who informs her that she does not belong in the parallel universe.