"Esmé lives with her grandparents on the uppermost floor of the topmost best building. It's her birthday. Mimi and Pipo gave her a beautiful guitar. But they didn't plan a birthday party--With the help of her cat, El Toro, and a lot of help from her neighbors in the topmost best building, the irrepressible Esmé gets the birthday party of her dreams"-- Provided by publisher.