After successfully seeking out the ultimate slider in the 2004 stoner comedy Harold and Kumar Go to White Castle, the cannabis-craving twosome returns in this high-flying sequel that finds them labeled terrorists for attempting to sneak a marijuana-smoking implement on a flight to Amsterdam. Harold (John Cho) and Kumar (Kal Penn) have just finished gorging themselves on savory White Castle hamburgers when they return to their apartment and hatch a plan for Harold to win the heart of his crush, Maria (Paula Garcés).