Money runs short. A lighter metal is needed for the rocket. George is forced to become more involved with Tom's class. Mary and George go to quiz night at the social club. A pregnancy test creates chaos.

A search commences for a site for the rocket bed, George struggles with his studies, and Barney asks George for a donation.

Stressors threaten to pull the team apart in the midst of testing the tracking system.

George negotiates for parachute material and then has to grovel to the women, after insulting them, for help in manufacturing the parachute against a changing deadline.

There are still hurdles to overcome before the launch, and George is not sure he's ready to say goodbye.