Tommy's favorite toy is missing, and so is his Happiness. In fact, he has gotten a little Worried. And then Angry. And as he searches for the toy, that emotion grows into Full-Blown Anger that eventually . . . explodes! And that's when he sees his little sister playing with her toys. And he can't help but get Jealous. And Sad.

His emotions keep lurking and looming like colorful monsters. What will it take to get them under control?