A).Arthur and D.W. sleepover at Grandma Thora's house and find out that she gets lonely when there not here, so Arthur and D.W. throw her a party to help her get out of the blue's.
B).Fern is not the most popular girl at school and she likes it that way but her mother doesn't so she throws a slumber party and tells all the kids to come. Eventually everything turns out great and she ends up getting the reputation as a detective.
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