Now in paperback! Ivy's worried. She's read a lot of books about only children, so she knows that they are sometimes spoiled rotten. They don't share their ZDs. They never do any work. They scream and cry when they don't get their way....

It's Career Day at Emerson Elementary School, and all the students have to choose what they want to be when they grow up. No problem. Best friends Ivy and Bean already have that all figured out. At least, they thought so, until they met...