Say " SI!" to a fresh, funny, Spanish-forward picture book series set in Skeletown-a cheerful, vibrant world filled with Di?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-si 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 reins in Skully's antics, but after they arrive at a friend's birthday party and the games start heating up, Skelly finally comes out of her sugar-skull shell and reveals that there's a hankering for adventure in her after all! With dynamic, neon art that pops off the pages, a completely unique approach to storytelling, and a wildly appealing (but not scary!) cast of calavera characters from the fantastical world of Skeletown, here's a rambunctious romp that will inspire giggles with Spanish and English readers alike!