A father is going on a business trip overseas for a week, so a professional maid, Hanamiya, is asked to take care of the housework and the only son during that time. The son is introduced to her as a polite and well-behaved boy at first, but the moment his father leaves the house, he shows his true nature as a naughty brat and transforms into a super naughty kid. Using his power as a shield, the son and the maid repeatedly play various sexual pranks on the maid, indulging in their carnal desires...