Astro Boy: Tetsuwan Atom - episode 45 - 21 Feb, 2004

A young girl named Ena loves Kipp, a GP IV robot with a kind heart. However, her father, Red, is not happy to see the robot and his daughter getting along so well, and decides to kick Kipp out of the house. When Ena finds out about this and goes to protest to her father, she falls down the stairs in a panic. The butler, who witnesses this, mistakenly thinks that Kipp has pushed her down the stairs and reports this to everyone. The news that "a robot who knew he was going to be kicked out of his house pushed the daughter down the stairs out of revenge" spreads quickly, and it terrifies the people. Ena, who knows the truth, lies unconscious in her sleep. Finally, it was decided that all GP IV robots would be dismantled. The squadron has to drag away their fellow robots, and Atom wants to save them somehow. Then, the Blue Knight appears. The Blue Knight rescues the GP IVs from being taken away for dismantling and declares that from now on, he is done with humans. (Source: Wikipedia)