Grampy Can Ya Hear Me

"Grampy Can Ya Hear Me" is the 5th episode of season 29. It aired on November 5, 2017.

Plot
On Grampa's birthday the Simpson family arrives at the Springfield Planetarium. After buying the tickets, to which Homer shows the ticket stand girl how he was an astronaut, he tries to weight himself and is surprised to weight just 182 pounds, but Marge corrects him indicating its his weight on the moon, while Bart and Lisa watches as a reproduction of talks about how it lost his status as a planet in the solar system, and he's taking revenge on the. At the Planetarium show, the family is watching a documentary on the big bang, but Grampa escapes after the explosion is shown.

Returning him to the Springfield Retirement Castle, Grampa complains about the music being too low, due to his hearing problem. At the castle, his companions throws him a little party, asking him to make a wish. Old Jewish Man gives him a birthday gift, an hearing aid, a much appreciated gift as it gives him the hearing back he has lost long ago.

Lisa goes to Bart's room to ask him a favour, while he was returning from preparing a prank for Skinner with a snake, to change a homework paper she delivered with the wrong date for when the big bang happened. Bart and Lisa break into the school's basement, and change the date, but also discover that Skinner is living in the storage. Skinner tells the story of how his mother kept a big secret from him. As a kid, he applied to the Ohio State University, to become part of the marching band, however his mother lied about him being accepted.

At home, Grampa hears the dislike of the family for him being there, and says he's leaving the home forever and goes to Springfield Mall, where the shop attendants threats him like an old man too.

That night, Lisa has a nightmare of the future, becoming president, however being disqualified for cheating on the paper, while Skinner dreams of becoming a drummer, and Grampa goes to the Veterans of Unpopular Wars bar, where he tells the bartender his problems.

Skinner goes to the Ohio State University, where he tells them his story, but gets refused, as its too late, and gets called a loser, convincing him to discuss the matter with his mother.

In class, Lisa confesses to Miss Hoover her trick, but she tells her she knew it, but she wants her nicotine gums that Bart stole, and its revealed he gave it to the class pet who darts across the room with his wheel, energized by them and goes to torment Willie.

At Skinner's house, Skinner tells his mother he knows what she did, but the anger goes away when she cries in front of him for what she did. He agrees to move back in to his conditions, though he has to live with Barney, who moved in his room.

Grampa has still not been found, and Homer receives a call from the bar, with the bartender sending Grampa back home and to not send him again there. Back at home, Grampa hears the family missing him, however they're just reading a script written by Lisa and Marge, but Homer reveals it's the episode's script.

At Skinner's house, Skinner and Agnes share TV, happy together. At the end, Hans Moleman is the main character of a short, "Nobody knows Hans Moleman]], where he falls on a manhole, and is stand upon by Homer, and is trumped by Patty, and scanned by Shauna like he's nobody, while he just needed his heart pills.