In the Dust of the Stars (1976) on Netflix

After a six year journey, the Spaceship Cyrno lands on the planet TEM 4 from where they had received a call for help. Strangely enough, the Temers deny having sent this message. As commander Akala prepares the spaceship to leave they get an invitation from the rich ruler of TEM 4 to be a part of a lush party. Not only do the opulent food and the seductive dancers cloud their minds, but also the drugs mixed into their food manipulate their consciousness. Only navigator Suko was left behind on the spaceship for security reasons and makes an unexpected, terrible discovery.