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Dave and his buddies have three hours to search an abandoned factory for precious metals. The old building could be a treasure trove, but Dave will have to move fast. Diego visits an auto yard on the hunt for spark plugs. Hoping to cash in on the platinum inside them, he ends up getting a lot more than he bargained for when he tries to make a deal with the yard attendant. Meanwhile, Rich visits a high school chemistry lab to see what precious metals might be lying around in old equipment.