Edith's magic has put Mildred under strict house arrest for three weeks and Mona doesn't want to see her anymore. Things can't get any worse, unless Mildred is not allowed to go on the upcoming school trip. And that's the punishment she's gonna face if she commits one more little transgression. The last day of house arrest is also the principal's birthday. On this occasion, Edith of course comes up with something special and the mean Esther goes even further: She locks Edith and Mildred in a storage room. So that's it for the trip! Or is there still a way out?