Tongari Boushi no Memole

Plot
At the border between Switzerland and France, there is a small island in the middle of a pond deep in the mountains. There lies Riruru Village, home of Memoru, the granddaughter of their leader, and her friends. Memoru's people have such tiny bodies that they could stand on a human's palm. A group of 245 inhabitants from Riruru make a crash landing onto Earth from their spaceship. This is due to a failure in the spaceship.

The citizens of Riruru are cautious about trying to adapt to life on Earth because of their size. However, this does not bother Memole. Memole is reckless and brave enough to venture with a group of friends into the city. Here she befriends a human girl named Mariel ("Muriel" in Wee Wendy), who because of her frail health, is forced to stay inside her house all of the time. One day Memole hears lovely music, and she follows its source and comes upon a huge house she hasn't seen before to find a girl taller than her playing on the piano. Memole visited her again secretly with her friends Popitu, Rupangu, and Pi, but the human girl, Mariel, seemed sick and likely to die any moment. Enchanted by the music played by Mariel with her piano, Memole is devastated when she finds out that the young human is on the verge of death. Feeling sad for the girl, Memole's tear drops on the girl's lips. Thanks to Memoru's tears, Mariel survives and quickly becomes a friend of the cute little being beside her. The two become inseparable, and their friendship grows throughout the series. They have many adventures as Mariel learns more about the Lillutians and Memole learns more about the human world.

Memole also meets woodland animals and uses an owl named Bo-bo for transport.

Mariel meets a boy named Oscar and falls in love with him. The three become best friends, but Grace, Oscar's mean girlfriend, tries to find out the truth about Memole, putting Memole's people in danger. In the end, Grace helps Mariel and Oscar get Memoru's people back to Riruru Star, but Memole stays behind on earth.