A new hallucinogen known simply as "The Shot" has appeared out of nowhere, gaining rapid popularity among celebrities, drug enthusiasts, and mainstream America alike. The drug, a bright green slime distributed in mysterious, unmarked glass containers, is injected directly into the stomach through a syringe. The experience, users say, is mind-expanding, and that "everything you see becomes something else." The Shot leaps to the forefront of the world's attention when an A-list actor has a very public meltdown while high on the substance. He uploads a bizarre two-hour rant to YouTube-which ends...