When Agent Mulder and the videotaped evidence of what happened the night Scully's baby was born both disappear, Agent Doggett and Agent Reyes find themselves alone in their investigation against Deputy Director Kersh. Even Scully wants no part of it. But when her baby starts exhibiting unusual behaviour, Scully contacts Doggett only to find he wants her to meet a woman who claims to be a product of the government's plan to breed "Super Soldiers" - a plan that is about to be expanded by adding a mutation-inducing chemical to the city's water supply