Description by couchtuner for Futurama Season 5 Episode 8 : Fry feels really down as Leela is head over heels because of Chaz, the Mayor’s Aide. While on her date, Leela asks Fry if he could walk Nibbler, and he reluctantly agrees. When he says how unimportant he feels, Nibbler speaks and takes him to his home planet. There, Fry learn about his genetic abnormality that qualifies him for a mission to save the universe. While on this mission, we learn what really happened on the night Fry was frozen.
Watch It Here : Futurama Season 5 Episode 8 The Why of Fry