"Bottoms Up" is an unapologetic celebration of Korean oral fetishes. The film opens with a close-up of a woman's mouth, her tongue flicking out to lick her lips in anticipation. She takes a massive cock between her lips, her eyes watering as it hits the back of her throat. The camera zooms out, revealing a dimly lit room filled with similar scenes. The air is thick with the smell of sweat and sex, the sounds of wet slurping and moans filling the room. The women, their faces glistening with spit and precum, take it all in stride, their skills honed by years of practice.