The true story of a young woman named Sybil, whose childhood was so harrowing to her that she developed at least 13 different personalities.

1970年，来自美国长岛中产阶级家庭的青年希斯（Brad Davis饰）与女友来到土耳其度假，临行前希斯偷携了两公斤大麻，不料登机时暴露，并因藏匿毒品被捕。希斯在被押往监狱的路上逃脱失败后又遭监狱官毒打，所幸他很快结识了两位狱友：吉米…