Dr. Millican's synth, Odi, is old and begins malfunctioning, but he refuses to recycle him.
Joe and Sophie shop for a "synth," which is an artificially-intelligent robot that can help with domestic tasks.
Upon meeting her family's new synth, Laura feels angry that her husband has "replaced" her.
Niska is forced to work as a prostitute. Synths can legally be prostitutes because they do not have human rights.
Leo and Max realize that Mia was modified by the Headcrackers.