Billy Marvin's first love was a computer. Then he met Mary Zelinsky. Do you remember your first love? The Impossible Fortress begins with a magazine...The year is 1987 and Playboy has just published scandalous photographs of Vanna White, from the popular TV game show Wheel of Fortune . For three teenage boys--Billy, Alf, and Clark--who are desperately uneducated in the ways of women, the magazine is somewhat of a Holy Grail: priceless beyond measure...