Somewhere in Europe by a great sea stands a small village, where inventing all manner of domestic gadgets is held in great esteem. The villagers organise an annual competition of new inventions. One of the most famous inventors in the village is Oskar, the father of the energetic girl dog Lotte. His primary rival is Adalbert the rabbit, whose wife even participates in the competition with all her heart. Victory would be important to their family and would bring honour to the entire rabbit clan.