You (Kevin) have knocked up the babysitter and are expecting twins. But she is not ready to be responsible enough to be a wife and a step-mother so she is going to take you instead as a new step-daddy and you will eventually have sex and knock up her step-mother and divorce your wife to make sure you keep knocking up the babysitter and the step-mother. The babysitter comes into your room and gives you a bj waking you up before telling you the happy news that she is knocked up. She seduces you slowly until she is riding you and begging you to cum inside of her again and to agree to divorce your wife, have her be the babysitter and for you to knock up her step-mother and be her step-daddy for real! You agree and cum inside of her.