I'll do my best to remember everything I can -
The very first scene is a father that is combining a crop, he is using a futuristic machine as this movie involves space, aliens, etc.
The planet ends up being destroyed very early in the movie, the father dies but the son who is about 17-20 is taken away on a spaceship. I believe he is knocked unconscious.
This is where it gets harder to remember. There ends up being a planet they land on where there are pink fuzzy like tentacles I believe that end up capturing them. But they are saved by a flying alien that has guns attached to his hips. Best way to kinda explain him, piccolo with a mask and wings.
Later the protagonists end up dealing with slugs that are trying to eat them.
The main protagonist ends up being badly injured, an old guy I believe takes care of him.
Then the end is him going to a weird dance like party to save his friends.
This is about the best amount of detail I can give, it's a very strange movie but was recorded on vhs and never was written down what is was called. So I have no idea.
Hope you all can help.