My new boss sucks

Last time i was looking forward to be under this boss as many people say he is very good. Now i think otherwise. This week, he make me stay back don't know how many times. Everytime look for me at 6pm when i am going to go home. Then discuss until don't know how to stop until i say i must go le. Please man, he has no life after work is it? No need to make me stay back with him. I have many things to do lor. Really piss me off. Somemore after 6 has no aircon, so damn stuffy in the office. Tomorrow he better don't make me stay back. I am going to FAN LIAN.