On a rainy day, there are ads for an amusement park all around the firehouse. Slimer wants to go to said amusement park, but Peter Venkman reveals that the park is closed because of the rain, and suggests playing pretend to pass the time.
Bored, Slimer draws a cat, then imagines a dog chasing it. Then, he draws the amusement park and pretends he's there. He imagines eating food, then losing at a carnival game. Then, still in his imagination, he wins the game by drawing a giant bottle and ball.
However, the bottle comes to life and throws the ball back at Slimer. He gets into a bumper car, only to find one of the bumper cars is sentient and glaring at him. Slimer drives away and lands on top of a rollercoaster. He ends up accidentally riding it, only for the seats on the rollercoaster to also come alive and be angry with him.
After a wild ride, the imagining ends, then he has another one of the rollercoaster train coming out of the picture and chasing him around the firehouse. He sends the train down the sink, then imagines it coming out of the fridge, so he draws a tunnel, sends it through, and rubs out the tunnel. Then, the sun comes out and Slimer takes a nap.
This short provides examples of
- Amazing Technicolor Wildlife: The elephant on one flyer is green.
- Animal Jingoism: The dog drawing chases the cat drawing in Slimer's imagination.
- Animate Inanimate Object: Slimer imagines several things at the amusement park coming to life and antagonising him.
- Ectoplasm: Slimer gets green gunk on the sink.
- Go-to-Sleep Ending: The short ends on Slimer napping.
- Idea Bulb: In Slimer's imagination, he gets the idea to draw the giant bottle and a lightbulb goes over his head.
- Kissing the Ground: Slimer kisses the floor after his imagination sequence of the wild rollercoaster ride ends.
- Rain, Rain, Go Away: The short follows Slimer trying to entertain himself on a rainy day.
- Scooby-Dooby Doors: The imaginary train chases Slimer through several doors in the hallway.
