Stepmom's test: Concerning the matter of care giving, in particular over my new Stepson, who is 18 years of age, do you think you can take charge of him?

Stepmom and stepson are people, that live in the same house; and in this movie, a sexual experience was filmed between the two performers and one more guy. Even the 18 year old stepson is not daughter but also laugh while having affectionate looks with his elder partner.