Eve's attempts to help her sister KT pass for human are derailed when a miraculously recovered Katherine returns to Calimov. To Nick and Eve's horror, Katherine reveals her new range of childbots, which have been placed with local families. To prevent Katherine restoring KT to factory settings, Eve smuggles her out of Calimov and back to the Clarke house. But with Will and Lily insisting KT is returned to Calimov, Eve and her sister are forced to take matters into their own hands. The situation escalates when Katherine's childbots start to malfunction and it is KT who comes under suspicion, admitting she has no wish to pass as human. In order to make Eve prove she loves her sister as she is, KT wants Eve to reveal her own robot identity to the world. Trapped inside the house by the childbots, and with police and reporters gathering outside, the gang's worst fears have been realised. With Eve about to admit her secret to the world on live TV, can Will's nanobots save the day?