The title character is a purple furry alien named Luntik. In the first episode Luntik is shown hatching from an egg on the moon and then falling to the Earth. All of the remaining series center on a forest glade near a pond where Luntik finds a new home. Most of the characters are small anthropomorphic animals such as insects, fish, frogs, and turtles, playing the roles of adults and children. The main characters learn about the world through new experiences and interactions with one another. The series provides a positive message and even the negative characters, such as the two trouble-making caterpillars and the angry leech are shown as also having positive qualities.