The sub has been trapped in the rubber vacuum bed and is helplessly at the mercy of Mistress Saran. His body is patted through the rubber and his erected nipples are humiliated, and yet he cums with just such little stimulation. To make things worse, a toy is attached to his ass and nipples, making him cum continuously. The poor trapped sub, turned into a toy, has to endure everything until the Mistress feels like it is enough.