Jonas, Mia and Lotta live in a small, yellow house in Bråkmakergata. They play and have fun all day. Dad says that Lotta is stubborn as a goat, and he is probably right. One day Lotta is sitting on the fence, Jonas and Mia come cycling at full speed, and Lotta becomes so jealous that she herself decides to learn to ride a bike. But she does not have a bike.