At Walter's birthday party his guests are supposed to go for horseback rides, but his horse Rain has other plans on the day of the party.

Alex, whose birthday it is, hijacks a story about Birthday Bunny on his special day and turns it into a battle between a supervillain and his enemies in the forest--who, in the original story, are simply planning a surprise party.

Marisol is turning eight, and it's time to plan a birthday party that will be fabulous, marvelous, and divine. She also hopes that Abuelita, who lives far away in Peru, will be able to come to the celebration.