In this sequel to 'Guess Who's Fighting for Dinner?', the Smith family unite to destroy the Riveras after Harold Smith returns from jail and Marianne Smith seeks revenge for her dinner party being ruined. However, they are about to find out the hard way on why the Riveras are not to be messed with.

Based on the Powerpuff Girls episode 'Just Desserts', which is the sequel to the previous episode 'Supper Villain'.