Love's Labours Lost in Space (S01E04)

While on a mission to rescue endangered species from a dying planet, Leela and her crew encounter the infamous starship captain Zapp Brannigan. Zapp, a notorious womanizer, sets his sights on Leela as his next target. When he declines to help with the rescue effort, Leela and her team attempt to leave his ship, but Zapp retaliates by imprisoning Fry and Bender. He then calls Leela to his "Lovenasium." Eventually, they manage to break free and reach the perilous planet, where Leela unexpectedly finds affection for a charming and helpful creature named Nibbler.