A widower and his son and daughter work toward his dream of building a rocket and try to get over the death of his wife and their mother.

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.

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