Two girls are chained to a wall with their tits squished together, kissing through their masks. Their dominatrix arrives to separate them, moving them to the floor masked with their hands bounce at the rear of their back. She places a existing device almost one of their mouths, forcing them to share air in order to breath, then closes them inside a rubber bag. Inside the bag they have to kiss and share the oxygen that one girl is getting, they commence to enjoy the intimacy of the bag. When the mistress returns she is dissatisfied that they enjoyed their punishment.