Borrowers have the appearance of a human, yet the size of a mouse. Their sizes range from the size of your pinky to your favorite finger (if you catch my drift). Without humans, they'd die. If,a human ever found them, they'd die. Borrows specifically borrow. And by borrow, we mean they steal it and keep it forever. When Button K. Brown is injured and left behind during a party accident, every borrower mourns. Except...she wasn't dead. In fact, she was being nursed back to health by none other than a human. When she breaks taboo of falling in love with a human, she must,decide between him and her kind.