It's 2424. Max and his robo-dog sidekick, Oscar, are out to solve another techno-history mystery! They've been asked to identify an object that's baffling everyone; a 1980s cassette tape. But there's more to the tape than meets the eye and the ears! When devious Dr. Grizzlowe tries to take credit for the tape's rock-tastic recordings, Max and Oscar know they're going to need all their future sleuthy skills to put things right.
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