Homework, there should be an app for it. This time Henry really is set to make a fortune, and all because he does his homework. Or does he?.

Henry begs Dad for a new mobile phone, while Peter's DJ gift from Great-Aunt Greta has gone too far.

When Henry fails yet again to hand in his homework for the umpteenth time, he has no idea that this will set off a chain of events which will see him forming an unlikely alliance with Moody Margaret, ...