John Cho and Kal Penn return as Harold and Kumar, two stoners who can't seem to get a break. In this new adventure the boys get themselves in trouble trying to sneak a bong onboard a flight to Amsterdam. Now, being suspected of terrorism, they are forced to run from the law and try to find a way to prove their innocence. What follows is an irreverent and epic journey of deep thoughts, deeper inhaling and a wild trip around the world that is as 'un-PC' as it gets.