He's passed his college entrance exams with flying colors. He can do pretty much whatever he wants. But what teenager Ron Morgan wants most is for his father to quit telling him what to do. Quit running his life. What better way to unwind than having a last blowout on Labor Day in the domed playground of Fun City: Manhattan.

Inside the dome, however, Ron loses his wallet and identity card. Worse, he's trapped when the dome closes for the season. There's no way out. Gangs roam the street. Food is scarce. Ron is on his own.

All Ron wanted was some fun. He'll be lucky to escape New York alive....