After campers and their horses dress alike during Twin Day at Storm Cliff Stables, Paisley and Zoey decide to be twins for the whole summer. This starts to bother Paisley and prompts her to complain to Aunt Jane, but she gets warned about tattling. When Zoey puts herself in danger, should Paisley tell? Aligned to Common Core Standards and correlated to state standards. Calico is an imprint of Magic Wagon, a division of ABDO.