Four-year-old Lotte moves to the country with her parents. She misses her friends and the apartment building that used to be her home. Her baby brother screams and cries and is allowed to do all sorts of things that she’s not. If only she could just give him away and move back to the city! But then Lotte meets Totte, who lives next door with his delightful Grandma. Together they bake cakes and go on adventures with Totte’s cat – in the backyard and at the beach. Until one day, a game ends in a fight.