The power plant's office party is being held at the Springfield Air and Space museum, where amongst other things we learn that Agnes Skinner was a wing-walker back in the 1920s. Mr. Burns is acting unusually nice, and then he makes an announcement that the employee prescription drug program has been canceled. Other companies follow suit, the citizens of Springfield at Springfield Retirement Castle, due to the high cost of medication, they cut their residents off cold turkey.
Grandpa goes to his son's home with a plan; he has a friend that will help them out. He and Homer go to Canada where they meet the friend that gives them cards that will let them get all the drugs they can carry. They return home and their drugs are in high demand. Ned and Apu accompany them on their next trip to Canada, but an unfortunate incident with Apu and a hot cup of coffee gets their cover blown as they try to cross the border. They are banished from ever returning to Canada.
Smithers can no longer afford the medication he requires and his thyroid begins to swell causing a concern for Mr. Burns, he doesn't want to have to train anyone else on his filing system. He provides the means, his old wooden plane The Plywood Pelican, for Homer to invoke his plan to fly into Canada. They load up, but on the return flight the plane encounters trouble. Burns bails out, leaving Homer and Grandpa to crash land the plane in Springfield's town square, where their smuggled drugs are hit. Meanwhile, Mr. Burns has cured Smithers and decides to reinstate the drug program for all his full time employees. Homer comes home from work to report that he is now a freelance consultant, complete with a lump on his throat.