Isa and her class are to write a composition about grandmothers. When Isa, who has no grandmother invents one, she never imagines the trouble it will cause.
Paco Poyo, a newsboy in a small Mexican town, agrees to deliver a message to a patient in the local hospital for a man who offers to buy all of Paco's papers, but the simple errand turns into a grand adventure.
A boy from an English workhouse falls into the hands of rogues who train him to be a pickpocket. He must struggle to overcome this environment of crime.