One day, the kids answer the door to find Wedgie, Cheese's missing piece! Wedgie is happy to have finally found her family, but she is so cute that Cheese gets jealous. Things only get worse when Wedgie starts accusing Cheese of being mean to her.

When Lady Burlington's precious jewels are stolen, the kids believe that Cat was the unwitting thief and didn't know that she was stealing. They try to put things right by returning the valuables and teaching Cat the error of her ways. However, with Lady Burlington's security guard searching for the burglar, the kids find their task way trickier than anticipated.