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Carter (Colin Ferguson) accuses Lexi (Ever Carradine) of being irresponsible when she encourages Zoe (Jordan Hinson) to skip school and attend a yoga retreat. Zoe, in turn, is miffed that her father is running her life. Carter's annoyance extends to Lexi's friendship with Chuck (Mark Hildreth), Eureka's radical recycling manager, and their we are saving the world superiority. Eva Thorne (Frances Fisher) continues searching for something. She persuades Zane (Niall Matter) to work on a very old lock. He does and opens a door into the past and its flawed technology. Unbeknownst to them, he also opens a second entrance to this old military installation and that door is in the basement of the Tesla School. Still angry with her father, Zoe insists that she, Lucas (Vanya Asher), and their friend Pilar (Adrienne Carter) should explore the mysterious corridors. They are deep into the complex and hopelessly lost when they encounter Zane and Lucas makes a mistake that traps them all behind soli