If you were a kid growing up in the late 90s to early 2000s, there's a good chance you or your siblings had Pokemon cards. And everyone wanted the foil cards which were cooler, rarer, and more valuable than the rest. The best card you could get in those days was the Charizard.
One guy who got into collecting the cards through his son brings a stack of the famed Charizard cards into the pawn shop of Pawn Stars and tries to get a cool $500K for his collection. An "expert" is brought in to evaluate the cards and apparently this guy has a large portion of the only mint condition cards in existence, including the only "10" rated one in existence.