When David has a problem at school, he gets worried about all the school rules. When Zainab tells him that everyone has to follow rules, even adults and even superheroes, Mali and Bella help him consider the rules that help everyone's life on the estate run smoothly.

Sam is confused: she can't work out what David is up to as he looks around for 'something new'. David certainly seems determined to find something special for his show and tell at school, but it's Zainab who finally discovers that David's determination is about helping out a friend.