INVITATION ONLY (2009)

Wade Chen, who works for a rich and powerful CEO, Mr Yang, accidentally sees his boss having sex with supermodel Dana. His boss supposedly rewards him by sending him to an exclusive party on company money. Wade's evening at the party includes receiving a new car, dancing, gambling and frolicking with the boss's mistress Dana. However, leaving the party is a problem and the guests are systematically hunted down and slaughtered by a masked slasher.