Roky is a charming little robot that got lost in the Universe. Fortunately, he managed to land in the house of two siblings, Matilda and Horatiu, two mischievous kids who live with their grandmother.
Roky is worried that his mother doesn't know where he is, but by learning about the world on Earth, he befriends the two children and has a lot of fun. A big fan of chocolate milk, Roky will want to bring the recipe to his planet, and the beautiful memories will make him promise to return to Earth.