At the dinner table, Marge announces to her family that she has served them genetically modified vegetables. Lisa warns that American corporations shouldn’t play with nature, and moments later Marge’s baked potato eats a fly. Disgusted, Marge decides to grow vegetables herself. Unfortunately, the plants attract crows, forcing Marge to construct a scarecrow. But Homer is more afraid of the scarecrow than the birds. One evening, he destroys it with a fireplace poker. The crows witness this…and soon adopt Homer as one of their own. But when the birds fly off with baby Maggie, Homer decides he’s had enough. He tries to shoo the birds away with a rake. Shocked, the crows attack him.

Homer ends up at Dr. Hibbert’s office, where his eyeballs are stitched back together. He is in so much pain that Dr. Hibbert suggests he use medicinal marijuana. At first, Homer is reluctant. But after getting high on a joint, Homer soon finds himself embracing the notion, much to Marge’s horror. Homer becomes so stoned that he asks Flanders over to the house so he can hear him read the Bible…and ends up signing a petition to re-criminalize medicinal marijuana. Later, a half-stoned Homer barges into Mr. Burns’ office. Burns takes a liking to his happy employee and makes him executive vice president of the company. The next day, Marge discovers Homer and Otto sitting in the attic watching television and acting like high school kids. But Homer’s attititude changes when he realizes the re-criminalization initiative is gaining strength. A huge pro-marijuana rally is held in town square, and among the attendees is the rock band Phish. But the participants are so stoned they realize too late that the election was already held…and medical marijuana has been outlawed.

Homer promises his family he won’t use marijuana again. But when Mr. Burns calls him into the office, Homer begins to doubt he’ll be able to laugh at Burns’ jokes the same way he did when he was high. Sure enough, neither Homer nor Smithers is able to muster up any laughs when Burns begins telling jokes. A small drop of sweat forms on Burns’ forehead, prompting Smithers to tell Homer that if Burns gets flop sweat, he’ll die of dehydration. Homer pulls out a joint and hands it to Smithers. Smithers lights up…and laughs hysterically at Burns’ jokes. He then dresses up like Judy Garland and begins dancing. Smithers has so much fun that he forgets about Mr. Burns, whom he left in a bathtub. Smithers and Homer race into the bathroom, where they discover Burns floating facedown in the water. Unable to revive their boss, Smithers and Homer attach marionette strings to Burns to keep him from missing an important stockholders meeting. During the presentation, Smithers and Homer vamp when a stockholder inquires if the company is losing money. Working the strings furiously, Smithers has Burns perform a dance. One of the strings breaks, and Homer nudges Burns’ body behind the curtain. Shortly thereafter, Burns revives, his circulation having returned during the dance routine. Later, Smithers again dresses as Judy Garland and performs for the shareholders.