In the movie, four teenagers and a twelve year old boy go to a NASA space camp, to spend three weeks of their summer training as astronauts and learning about the space program in general. There, they will meet a female instructor who is frustrated at the fact she still hasn't gotten a chance to be up there, despite this being her life's dream.
But things start to unravel when the 12 year old boy, Max, saves the life of a robot named Jinx, and, to return the favor, Jinx decides to send Max into space after listening to Max say that he wished he could fly to space in a moment of frustration.
So Jinx secretly enters NASA's computer systems on the night before the morning the teens and the instructor were to be on a real space shuttle for the first time, and fixes all the programming so that the shuttle will be launched.
That morning, they all head into the shuttle and after sitting there and studying the flight panels, the engines start turning on to their surprise, and although the NASA controllers tried to stop the shuttle, it was decided that in order to evade a catastrophe, the shuttle had to take off, sending the teenagers and their instructor into space without any previous warning.
After much manuevering from their part, the teenagers and the instructor are able to return to Earth, but not without facing major problems.
Among the characters in this movie were: