Earth's water has disappeared! Part one of the molecular mystery is soon solved when Multo discovers that all of Earth's water molecules have separated into their individual atoms of Hydrogen and Oxygen. When Bula and Zeeter shrink to atom-size they find the reason for the separation is a family feud. It's up to the Zula Patrol to get the feuding atoms together as molecules -- and get Earth back together -- before it's too late.