Their parents have trustworthy Kyle in charge of his young bratty step-sister Kat. So when Kat decides to invite friends over for a party while her parents are away, Kyle must take extreme measures to convince her not to. He pulls her over his knee and spanks her hard with his hand. But that is not enough to convince her, so he uses her own hairbrush on her bottom until she breaks and agrees - no party. As she walks up the stairs to her bedroom, she rubs her sore, red bottom.