Most of the "story" was explained in the introduction to the game. The game is about a mother who invites in everyone who is in the game, with the exception of her son. After that, ... oh that's it already.
positive:
The quality of the renderings are fine
Mother looks really good (personal opinion)
negative:
The "story" is not a story at all, all could be one evening of fun for the mum
Very little picture material (i would gess, less than a 50 renderings)
Texts are carelessly written
Genitals are unnatural formed
All characters have stupid facial expressions, mostly a silly smile (I can't judge what they want to express)