Itsy finds a pirate chest full of balls marked with letters. She finds that some balls bond when touched together. The pirate returns. He explains the sticking by analogy to Lego pieces. Itsy puts simple molecules like HOH and OCO together, then discovers organic chains. She touches her tongue to a sugar molecule and the sweetness wakes her. Her mother tells her the balls were really atoms, that a hundred kinds of atoms make everything in the universe, and explain the molecules in her dream.