The plot for this story is based on a 1950 short story by Poul Anderson
, "Flight to Forever", where time travelers can only move forward, unable to find a time where movement backwards is possible. They eventually travel through to the end of time and witness the rebirth of the universe and the earth before returning to what is their own time. See more
[recording a record-your-own-message birthday card fir Leela
Happy birthday, Leela! I'm really sorry I'm gonna be one minute late, because we're testing the Professor's dumb time machine. But, well, happy birthday and all, and, I love you.
[the Professor accidentally moves the switch which makes him, Fry and Bender go deep forward in time. Fry loses his card
Ah, my card!