Galaxy Express 999
The Witch of Plated City (1) (1x34)
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The 999 arrives on a planet where everything is plated in gold, the streets, the buildings, even the people. A thief knocks Tetsuro out and steals Maetel's luggage. Tetsuro runs after him into the sewers where he discovers the thief, a teenage boy named Hoilock, is not gold after all.