In their third CG animated short, Pixar started to go more ambitious. John Lasseter and his team had the lighting challenge of setting the story at night, expanded on the detail of the locations, attempt liquids (which are still difficult) and expanded the score of the story by doubling the running time. As for story, it's their first short that has a fully developed theme. However, some bad character design with their first organic character dates the film and serves to distract the audience from the more fleshed out plot.
It's a rainy night. Eben's Bikes is having a sale. Red, a lonely unicycle, sits in the corner with 50% off tag. He dreams of getting bought and performing in a circus act. In his dream, he works with the juggling clown Lumpy, and actually goes on to outshine his human operator.