A new U.S. agency called NASA chooses seven test pilots to be the nation's first astronauts.
The Mercury Seven become aware of their sudden fame and the pitfalls that come with it.
Competition intensifies between the astronauts; Al has mysterious bouts of vertigo.
As 1960 approaches, a humiliating rocket launch throws the future of NASA into question.
An indiscretion leads to a greater conflict that could determine who will be chosen first.
With JFK now in office, NASA finds itself under scrutiny, and Shepard's flight is delayed.
The tensions between Glenn and Shepard hit a breaking point when weather endangers Shepard's flight.
After Shepard's voyage to space, astronauts begin to wonder what's next.