Ivy used to be Anne the librarian's favorite doll when she was a little girl. And when Anne finds Ivy again in the attic, she brings her to the library to join the Book Buddies, toys that can be checked out, just like books. But Ivy doesn't want to be borrowed. She wants to go back to the way things used to be when she was Anne's favorite toy. Fern, who is spending time with her dad and his new family, doesn't want to go to the library—story time is for younger kids like her stepsiblings, Sophie and Ethan. And she definitely doesn't want to borrow a doll. But Sophie insists and Fern ends up borrowing Ivy. Can Fern and Ivy find a way to help each other adjust to a world that's changed? From Newbery Honor winner Cynthia Lord and celebrated artist Stephanie Graegin, here is the first in a heartwarming series about a group of friendly toys at the library and the children who borrow them.