When Clare discovers that Harley and Alex have Paul's no-thongs rule, both girls know they're in for a spanking. Nursing their sore bottoms afterwards, the girls are shocked to discover that Clare, herself, is wearing a thong! The rules apply to her too and, taking matters into their own hands, the girls upend their step-mother for a spanking of her very own. Shortly into Clare's impromptu punishment, Paul returns from work...