Elsa and Kristoff's efforts to organize a birthday party for Anna are complicated by an unexpected chill that falls over the festivities.

"This little pea is hungry! So hungry it swallows a sprout, slurps up some soup, munches the bread, gobbles the cake, noshes the pickle, guzzles the cheese, drinks all the tea, and even chomps down the table its all served on. After all that, it needs to sleep. But whose dinner did it steal? And whose mattress is the now-humungous pea resting under?"--Provided by publisher.