(한글) (영어) Barbie descends into the unknown abyss inside the mysterious tunnel to search for Sam, and discovers a world which is both familiar and filled with unanswered questions.
(한글) (영어) Barbie and Sam investigate a mysterious tunnel, but a cave-in severs their path back to Chester's Mill. Meanwhile, a dust storm rages in the town as Julia and Big Jim face-off in a power struggle.
(한글) (영어) Chester's Mill is divided over Big Jim and Rebecca's controversial population-control plan, leaving the way open for Julia to take control of the town. Meanwhile, Joe and Norrie accompany Melanie to the dome wall, where she searches for clues about her identity.