S01E01 Arale's Birth / Hey! Friends
Senbei creates Arale and takes her on a test-run as a convincing little sister. However, she's not as tuned-up as her creator would have expected. / Arale is enrolled in school, and tries to win...
The alien King Nikochan and his assistant abduct Arale and Gatchan, with the expressed intent to destroy the world. However, Gatchan's appetite for metal causes their ship to crash, which leaves the two invaders seeking help from the earth people.
Senbei Norimaki, known by his nickname Dr. Slump, a genius yet under-respected inventor and roboticist, creates an android by the name of Arale, and poses her as his little sister. What starts as an experiment in robotics turns into an adventure every day for the residents of Penguin Village, a wacky rural community with several colorful characters interacting with Arale and her creator.