Mistresses Kira and Sofi, seasoned lesbian dominatrices, put their submissive through a degrading session of ashtray humiliation. The pitiful slave, with a ball gag in her mouth, is forced to serve as a human ashtray for the dominant lesbians. They stub out cigarettes on her body, leaving burns and marks, while they engage in passionate kissing and groping, their bodies pressing against the slave's flesh.