Eddie is convinced that his parents are splitting up and asks the monsters to help him stop his dad running away. But the monsters are too busy reviving their singing group, The Fabulous Monsterettes, convinced that Angela wants them as her backing group.

When Eddie teaches Haggis to be more assertive, things soon get out of hand as the furry giant starts to throw his weight around. Meanwhile Fiend is reduced to a gibbering wreck, now that Haggis has taken his role as the bossy monster.