Lena's boyfriend Jason brings her home for Christmas to meet his family, and while everything seems normal on the surface, it doesn't take long for Lena to realize that the house she's in is anything but. After waking up in the middle of the night, Lena witnesses a shocking sexual encounter between her bf's mom Alexis and her stepson Tyler. Will she be able to keep their secret and enjoy the holidays? Or will she fall deeper into the rabbit hole of the household's unspeakable erotic escapades?