The Doctor faces the end of his life as the Master's plans hurtle out of control. With the sound of drums growing louder, and an ancient trap closing around the Earth, the Doctor and Wilf must fight alone. But sacrifices must be made, and the deadly prophecy warns: "He will knock four times."
"越戰(zhàn)期間，美軍大征兵。大年輕人應(yīng)入伍，在兵營(yíng)接受殘忍”的練。“傻”比爾運(yùn)神經(jīng)不發(fā)，常常犯而連累所人一起受?！靶〕?（馬修?莫迪恩 Matthew Modine 飾）奉命幫助爾，但比還是老犯誤，連累他人。大忍無可忍打了他一，比爾從變得精神惚，在新營(yíng)畢業(yè)前槍殺教官吞槍自殺
