retcon
noun [ C ] uk/ˈret.kɒn/ us/ˈret.kɑːn/
追溯修订，连贯性重设（Retroactive Continuity 的简略说法，指的对电影等虚构作品中之前的故事进行补充与修正）
a piece of new information given in a film, television series, etc. that changes, or gives a different way of understanding, what has gone before. Retcon is short for "Retroactive Continuity".