Can you honestly swear that at least once in your life you have not thought that robbing a bank is a good idea? Especially, if you're five years old and that bank has just thrown your parents out of a brand new apartment, because your father has lost his job. Five year old Robby is no Zorro, but he'd like to be. His seven year old sister Louise thinks he's too childish, but can't resist the game of robbing a bank. Together they can pull off just about anything. Getting away with it is the hard part.

The parents have gone away, so the two sisters - Marta and Linda - need someone to take care of them. Their dictatorial spinster aunt Una, who desperately wants to get married, arrives to take on this job. Marta really wants a puppy, but her plan is ruined, as her aunt has a strong dislike for dogs. So, the relationship between the girls and Una becomes really tense. Until the perfect plan of the sisters emerges - to get rid of the aunt by helping her to get married.

On his deathbed, the reigning king bestows power to an unexpected heir who must find strength within himself to unite his people against the violent crusades which threaten their freedom.