Digimon: Digital Monsters

The Eighth Digivice (1x31)

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Tai begins to think that Kari is the 8th digidestined, and Izzy decides it's time to hide things from his step-parents, but when Izzy detects a new digivice, trouble begins anew. How can the digi-destined save the eigth child when Izzy's the only one awake?