Shy girl Amy and her outgoing friend Sally are on vacation in England. Ignoring villagers' warnings, the girls head to the Slaybury Castle. Its dungeons are still inhabited by hideous creatures and a madman named Grayson Highfield. Grayson's creatures need to breed and soon Sally and Amy are experiencing all kinds of pleasures from the dungeon beasts.

Sam Wesson can't admit his love for BBWs to himself. Even though he is attracted to his curvy neighbour Millie, he fear what his friends would say if he had a fat girlfriend. He denies Millie after a kiss, but later admits his fears to her. Once she shows him the pleasures a plus-sized woman can bring to a man, he is coverted forever.