Farscape S01 E06 Thank God It's Friday, Again

"My name is John Crichton, an astronaut. I'm just looking for a way home."

The crew visits a planet full of happy workers. Soon D'Argo and Zhaan start working and refuse to return to the ship. Meanwhile Rygel's body fluids become explosive and Aeryn and Pilot must learn why before Rygel dies.