 Faceless alien rebels are committing mass murders. Mulder and Scully meet a multiple alien abductee, Cassandra Spender. As the consortium tries to determine how to deal with these new alien rebels, Mulder and Scully work to figure out Cassandra Spender s connection with these mass killings. In their way is Agent Jeffrey Spender, who doesn t believe that his mother, Cassandra Spender, is an alien abductee.