21th episode of Pokemon Ash Gray.
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Play along: http://pokemonashgray.com/pokemon-ash...
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Plot 1: As our heroes make their way through the industrial town of Gringy City, Pikachu, perhaps weary from travel, is in a strange state; the electric sacks on his cheeks are continually twitching as though overcharged. At the town's Pokémon Center, Joy diagnoses Pikachu as being in the first stages of a Pokémon cold. She begins treatment immediately, but the town suddenly goes into a blackout. Assuming the problem to be in the power-generating station near the beach, Ash and friends go to investigate. There they discover the Pokémon, Magnemite and a pack of Grimer—Pokémon created from sludge. What exactly is going on?
Plot 2 : Ash, Brock, Misty and Pikachu are lost deep in the mountains. As they press forward on a rough road not even shown on their map, they suddenly hear a large explosion. Running toward the sound in surprise, the party emerges on a construction site where tractors are building a tremendous dam. Ash learns that the foreman is trying to recruit skilled Pokémon trainers because earth Pokémon, Diglett, are interfering with construction and delaying the completion of his work. The foreman has been recruiting Pokémon trainers to get rid of the Diglett. He will award free passes for travel to a luxurious natural hot springs to anyone who can accomplish this
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