King of the Castle is a children's drama series that follows Roland Wright, a timid schoolboy who is much put upon by his overbearing parents and the bullies at school. To compensate for his meekness in real life, Roland develops an elaborate imaginary world where everyone he knows appears as a grotesque double and he can be top dog. However, when a freak accident throws him into this alternate reality, Roland will have to rely on all his wits if he truly wants to be the king of the castle...