Bibble and the Bubbles

Bobby lives on Earth and often wonders where the bubbles he blows go once they drift off into the air. Far away, 667 million light years from our planet, an alien named Bibble has the opposite puzzle: he wants to know where bubbles come from. To find out, he builds himself a spaceship made of bubbles and flies to Earth, where he meets Bobby. The two have no words in common, so they use bubbles to communicate and become friends. Eventually Bibble has to return home, but Bobby will not forget his visitor.