One summer, when both his parents are called away for work, Oskar is sent to the countryside to live with his grandmother. Not being particularly close to his grandma, he is immediately lonely and unhappy – a state which becomes much worse when he realises that he's left his mobile phone at home.
Desperate for an escape from his phone-less existence, Oskar crafts a phone out of a block of wood and uses it to pretend to call things. Surprisingly, the things reply! From a bored iron, a rhyming trashcan, or a red balloon that gets tangled in the crown of a birch tree and ultimately becomes Oskar’s best friend. Soon, everything around him comes to life.