What is the main conflict in The Charm School by Nelson DeMille?

A young American man named Gregory Fisher drives his Pontiac Grand Am into Moscow after first losing his way near the battlefield at Borodino. Fisher encounters someone in the pine forest at Borodino who claims to be Major Jack Dodson, an American pilot who was captured by the Vietnamese nearly twenty years earlier. Dodson tells Gregory Fisher a fantastic story about a place called Mrs. Ivanova's Charm School.