Adam, Bree and Chase discover chores and earning an allowance, which they soon become obsessed with.
Archer rescues a mysterious slave girl from an alien market. However, she soon begins using her strange powers to collect information about humans for her Xindi overlords.
Nick and Burton form the new Fallin & Fallin, and represent the hospital in which a male nurse who worked the oncology ward confessed to killing 19 terminal patients while on duty.
A new terrorist organization demands the release of Sark in exchange for two scientists they have kidnapped; Vaughn wrestles with the decision to return to the CIA even though it will mean working with Sydney.