2 dudes. One is some kind of businessman. The other always waits for him. When they meet up, they have sex. And this cycle continues. This time they end up having little SM sex - using ropes and a knife with some aphrodisiac on it.
In chapter 3 the businessman made the other dude wear a GPS tracker on his foot and a vibrator in his a** and then appoint a meeting. Needless to say He got hard and the meeting had to end sooner. They had sex afterwards.
Midnight Dog Show