Convinced that her family is in danger, Samira attempts to return home. Meanwhile, Cassandra asserts full control over the house.

Samira moves her family into a 1970s smart home. Her curiosity turns into suspicion when her son reactivates the house's long-dormant AI assistant.

Cassandra begins to turn Samira's family against her. Fynn takes an interest in a classmate. In 1971, a woman suspects her husband of infidelity.

Feeling isolated, Samira tries to convince David of Cassandra's intentions. In 1971, a mother goes to extreme lengths to protect her son.

Fynn goes looking for Steve. Tensions reach a boiling point during Juno's playdate. In 1964, a medical experiment takes a terrible turn.

With Samira out of the house, Cassandra takes her family hostage. In 1972, Cassandra adapts to her new living circumstances.