I happened to know one of the stars in this movie, but I know she'd like to forget it exists. It first came out in 1974, and then Palmer Rockey rented the North Park theater for two weeks to show it again in 1979 or 80. I'd missed the opening weekend in '74, but some friends told me about it. They said Rockey actually rented a limo to make a grand entrance. Before it was over, people were throwing stuff at the screen. Keep in mind that he had declared he was going to win an Oscar for "Best Song." (He sang it himself.)
After it got awful reviews in '80, when I saw it, he started telling people that it was all a big joke. He played multiple characters, but it was obvious that it was him because he didn't change his shoes, just his clothes. He also shot it like a high school play, from start to finish. If a scene changed, everything was moved to that scene, and then back to a previous scene. He didn't seem to know how to edit a film together. There's one scene where a coffin on a rolling cart gets away from him and rolls down a sidewalk. He has to chase it to catch it, and he leaves that in the film. I found myself getting embarrassed for him, and I've never had the heart to tell my friend that I saw it.
As far as spoilers, the movie didn't make any sense, so I don't think anyone could spoil it.