Del is a songwriter for Mr. Mega, and he's trying to write a song his boss will accept. He has a tune, but can't find the words. With a deadline facing him, and anxious to make good so he can marry the boss's secretary Didi, he gets into his car to drive to Mega Corp, but an impossibly complicated cloverleaf sends him on a journey past seemingly hundreds of people performing in a variety of pop styles, from tango to beach movie music, while environment and characters go through transformations.
Enjoying Plympton's cartoons means enjoying his surreal transformations, like Melies' work, but elastic to the point of.... well, cartoonishness. The best sequence is one without any sound, in which two men torment each other like characters in a Laurel & Hardy short as it might have been animated by Teniel. I don't think there's any real point to this movie; Del's quest for a song is an excuse to enjoy these extended gag sequences, and I enjoyed them very much.