Kelsie was depressed. She raided her step-mother's cabinet and went back to her room. She changed into her little red slip, got on her bed, and starting knocking it back with a vengeance. Not knowing her own limits, it was not long before she fell resting. Her step-brother Anthony had just got in from a night out with friends. He saw his step-sister's door open and peeked in. She was sprawled on her bed, the hem of her slip hiked up and showing a lot of thigh. Right or wrong, Anthony was turned on. He slipped inside, checked his step-sister was okay, and started taking a closer look at that body of hers. After peeling aside the slip to get a look at her breasts, he slid her panties off and ran his hand over the smooth skin of her legs. Kelsie barely stirred. Anthony liked how his step-sister was built. He began playing with Kelsie's pussy while he sucked on her breast. Anthony felt wicked, but he could not help himself. He got off the bed, removed all his clothes, and got back onto it with his head between his step-sister's legs. He started licking and her pussy, and when Kelsie showed no sign of waking, he decided to go all the way with her. Turning her hips to one side, he entered her. Kelsie was silent as he pumped his cock in and out her pussy. Anthony was enjoying himself more and more. He slipped down till he was spooning his step-sister and he could fuck her and suck on her pert breasts at the same time. He was having so much fun that he did not notice his step-mother standing at the door. Rachel had gotten thirsty during the night and gone to the kitchen for a drink. On the way back down the hall she had heard strange sounds in her step-daughter's room and decided to look in on her. She stayed calm when she saw what Anthony was doing. Rachel was every bit as wicked as her step-son. Her pussy throbbed as she watched Anthony turn his step-sister onto her front so he could fuck her from behind. Unable to stand by any longer, Rachel walked in. She practically smoldered as she asked Anthony to explain himself. Her hands rubbed at her hips and thighs and her big breasts heaved in the tight, scant silk of her black negligee. Anthony knew there was no use in trying to justify himself. His step-mother saved him having to bother. You want me to join in? She asked. Anthony nodded, and Rachel buzzed no time in taking off her robe and getting on the bed with her step-son and step-daughter. As she slid Kelsie's slip down and started caressing her breasts, Anthony got between his step-sister's legs again and resumed eating her out. By the time Kelsie began waking up, Rachel was sucking her step-son's cock to make it hard and ready to go back into her pussy. Together they worked to bring her pleasure. Anthony fucked his step-sister in the missionary position while Rachel fed her breasts to suck. Soon they had Kelsie groaning through her daze. Anthony gave his step-sister's pussy no rest. He licked her and fucked her spoon-style while Rachel rubbed her clit. It was not long before Kelsie was wide awake. She gladly obeyed when Rachel told her to give her step-brother a blowjob. The two women sucked and jerked Anthony until came hard and fast in his step-mother's mouth. Rachel was surprised by her step-son's hair-trigger, but she forgave him. It was all such fun.