Set in a German-speaking country in the seventies, brother and sister Tyltyl and Mytyl live with their parents, a dog and a cat. When their mother becomes seriously ill on Christmas Day, Tyltyl and Mytyl receive the visit of Berylune fairy. It entrusts them with the task of finding the “blue bird”, the bearer of happiness, making them able to heal the mother. With their dog Tyrol, cat Shanet, and a range of spirits, they set out on a journey to find the “blue bird” and maybe learn happiness along the way.

A Japanese adaption of Robert Louis Stevenson's Treasure Island, featuring animals as the majority of the cast. By chance Jim comes upon a map of Treasure Island. He leaves the port accompanied by Glan, the rat and Bub, the baby on a strange looking boat of his own make to look for the island. Pirates soon find him and adventure ensues.