Naive Amsterdam schoolboy Ollie Hartmoed's life is a complete mess. His parents and even his grandparents separate, so he's thrown together with step-brothers. Even the family firm, a mega drapery store, has been sold to a soulless firm, which runs it into the ground. Meanwhile Ollie strives to square family, friendship and a crush on rich alderman Tulp's brat daughter Germaine.
Arpo might seem scary but he isn't some top secret government's project, he is just a harmless housekeeper; one who unfortunately finds himself working for the wackiest family known to mankind.
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.