Meet Madgie M. Cappock, also known as Mad Cap, of the Rent-a-Hero agency – no job too big or small. Madgie and her partner in crime Norbert Soup follow a series of clues to solve a mystery involving a missing butcher, an evil cat and weird old Mrs Mudrick across the road, who seems to have it in for them. On top of all this, Madgie's mum's been acting really strangely and – wait, why is Norbert wearing a giant yellow bunny suit? Can the young superheroes figure out what's going on before it's too late? Mad Cap forever and beyond!