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Irene and Franklin York have a secret: a Chamber buried in their backyard which leads to a strange, deserted planet. But surprising revelations make them reevaluate what they think they know about it.

Franklin and Irene decide what to do with the mysterious man from the Chamber. Single-mother Stella grapples with revealing a family secret to teenaged daughter Toni.

As Irene finds a new zest for life, Franklin becomes more suspicious of Jude. In Argentina, a visitor has something important to give Stella and Toni.

Irene helps Jude search for someone he has lost. Franklin forms an unexpected bond. Stella begins her mission with help from an old friend.

Irene goes to new lengths to help Jude. Stella and Denise both visit places that haunt their past. Franklin gives Byron an unexpected gift.

A shocking discovery divides Franklin and Irene. Tensions between Stella, Toni, and Nick reach new heights. Jude recruits Denise into his search.

Irene, Jude and Denise go on a road trip to find Gabriel, while Franklin and Byron take a journey of their own. Stella and Toni get to know Farnsworth.

Jude makes a difficult decision, while Franklin and Irene reflect on recent events. Stella's mission brings her to the Yorks' doorstep.