Helio is a boy who is always looking up at the sky, chasing a star that shines just for him. Rubi is a girl who digs deep in the earth, searching for a rare sparkly diamond. As one is always looking up and the other always down, they crash into each other on the way to school. A friendship develops in which Helio and Rubi teach each other the wonders of their own little worlds. Together they enter a far larger world where all things connect and mirror each other.Helio and Rubi find that as above, so below: the sky and the earth have more in common than they first thought. And most importantly, they find in each other what they were really looking for all along—a true friend