Say "?SI!" to a fresh, funny, Spanish-forward picture book series set in Skeletown--a cheerful, vibrant world filled with D?a de los Muertos-inspired characters! Spend the day with Skully and Skelly as they learn what to say "yes" and "no" to! With the clever use of just two words-- s? and no --throughout the whole book, a sequence of hilarious gags leads to mischief, chaos, and ultimately friendships soaring to new heights! At first, cautious Skelly...