Kalle, a small boy living in a big city, is content with lying in the top of a big tree and dreaming, for example about Emma. On the ground beneath it sits his big fat grandpa and he reads the newspaper over and over. Once in a while Kalle climbs down the tree and experiences all kinds of adventures.
In the fantastical Land of Ooo, the little robot BMO is on a new adventure. Now settled in a new neighborhood with new friends, BMO approaches each challenge he faces with his unique brand of enthusiasm and curiosity in a quest to learn and fill his database.