The Sacred Planet of Silence
Maetel and Tetsuro arrived at the Planet of Silence, where raising one's voice (beyond a whispering level) was punishable by death. Maetel asked Tetsuro to stay behind while she had to attend to some private business (concerning her "mission" with Tetsuro). Bored and worried, Tetsuro went looking for her. The townsfolk could not tolerate his voice, and was soon caught by the authorities to be executed. He was rescued by Maetel and a woman named Sylvia (in a Good, Bad, and Ugly way). Sylvia revealed that the law was enacted because everyone wore hearing aid to better listen other people's business, a vestigial legacy of a former totalitarian regime. Sylvia's father was executed when he cried for help to save her, when she was still a baby. They were discovered and surrounded. Knowing their weakness, Testuro screamed at the crowd so loudly, that their hearing devices fell out. The planet returned to normal as the train departed with Maetel and Tetsuro on board.
Aired 07/02/1980EP 64 - The Sacred Planet of Silence

Galaxy Express 999
After witnessing the death of his mother and being left for dead at the hands of Count Mecha, ten-year old Tetsuro Hoshino is awakened by a mysterious woman, Maetal. In exchange for only his company, Maetal offers him the ride of his life on the Galaxy Express 999. It is said that those who travel aboard the legendary train to the end of the line can receive a free mechanical body and with it, immortality.
Impoverished and alone, Tetsuro leaps at the opportunity and joins Maetal on a quest that will span the cosmos. As the Galaxy Express 999 makes its way across our solar system and beyond, Tetsuro is drawn deeper into a dangerous universe where peril lurks at every stop.
(Source: Discotek)