Max's ants escaped from their ant farm. They went looking for bunny's birthday cake. The ants bite the cake and are drenched in cranberry juice, which they subsequently drink and find delicious. EEEeeeeek! says his big sister. Max, whose bites itch and with Ruby, who tries all sorts of things to relieve her brother's discomfort. She even tries to vacuum up the ants. Nothing works, but the ants finally tire and fall fast asleep.